答:由国际计量大会(CGPM)采纳和推荐的一种一贯单位制。国际单位制(SI)结构如下:Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
国际单位制(SI) SI基本单位(见表1)Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
SI导出单位Ï
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包括SI辅助单位在内的具有专门名称的IS导出单位(见表2)Ï
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组合形式的SI导出单位Ï
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SI单位的倍数和分数单位Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
表l SI基本单位Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
量的名称Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 单位名称 Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 单位符号Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
长度Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×质量Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×时间Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×电流Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×热力学温度Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×物质的量Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×发光强度Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 米Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×千克(公斤)Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×秒Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×安[培]Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×开[尔]Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×摩[尔]Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×坎[德拉]Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | mÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×kgÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×sÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×AÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×KÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×molÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×cdÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
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说明:Ï
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*圆括号中的名称,是它前面的名称的同义词.下同。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×*无方括号的量的名称与单位名称均为全称。方括号中的字.在不致引起混淆、误解的情况下,可以省略。去掉方括号中的字即为其名称的简称。下同。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×*本标准所称的符号,除特殊指明外,均指我国法定计量单位中所规定的符号以及国际符号,下同。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
*人民生活和贸易中,质量习惯称为重量。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
1)SI基本单位Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
SI基本单位定义如下:Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
米——等于光在真空中于(1/299 792 458)秒时间间隔内所经路径的长度。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
千克——等于国际千克原器的质量。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
秒—一等于与CS-133原子基态的两个超精细能级间跃迁相对应的辐射的9192631Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
770个周期所持续的时间。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
安——等于在真空中,截面积可忽略的两根相距l米的无限长平行直导线内通以等量恒定电流时,若导线间相互作用力在每米长度上为2 x lO-7牛顿时的导线中的电流。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
开——等于水的三相点热力学温度的(1/273.16)。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
摩——等于一系统的物质的量,该系统中所包含的基本单元数与O.012千克坨C的原子数目相等。(使用摩尔时,基本单元应指明,可以是原子、分子、离子、电子及其他粒子,或是这些粒子的特定组合。)Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
坎——等于一光源的发光强度,该光源发出频率为540×lO12赫兹单色辐射,且在此方向上的辐射强度为(1/683)瓦特每球面度。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×2)SI导出单位 Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
SI导出单位是按一贯性原则,通过比例因数为l的量的定义方程式由SI基本单位导出,并由SI基本单位以代数形式表示的单位,它们是由两个以上基本单位幂的乘积来表示。为了读写和实际应用的方便,以及便于区分某些具有相同量纲和表达式的单位,在历史上出现了一些具有专门名称的导出单位。但这样单位不宜过多,SI仅选用包括辅助单位在内的具有专门名称的导出单位一共有21个,详见表2。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×表2 包括SI辅助单位在内的具有专门名称的SI导出单位Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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在国际单位制中,SI基本单位,具有专门名称导出单位,以及直接由它们构成的组合形式的导出单位,都称为SI单位,是量的主单位。而这些主单位量值的大小,不一定非常适合科学、工程和商贸领域的实际需要。因此,国际单位制规定可在SI单位之前加上SI词头(如表3),构成大小不同的lO进倍数单位和分数单位,如长度单位m的倍数单位有km,Mm,Gm等,分数单位有cm,mmυn等二Ï
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但在实际应用中,不能把国际单位制单位和SI单位划等号,两者在含义上有区别。国际单位制单位包含了这个单位制中所有单位,但SI单位是国际单位制中的一部分单位,它们都不带SI词头(即系数为l,质量单位kg除外)。带词头后形成的倍数单位和分数单位。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×(系数不是1)称为SI单位的lO进倍数和分数单位。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×SI词头和SI单位构成SI倍数单位或分数单位,因而,SI词头是SI单位的倍数单位或分数单位的一部分。它不是单位的本身,而是代表lO的不同指数大小。所以它们不能单独使用,只有在单位符号之前才有意义,而且不能使用重迭的词头。例如:把词头k加在基本单位m的前面就构成km(10的三次方米),但不能构成m/an(应写成nm)。km,nil]分别是m这个SI基本单位的倍数单位和分数单位。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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答:由国家法律承认、具有法定地位的计量单位。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×1984年2月27日,国务院发布命令,规定我国计量单位一律采用《中华人民共和国法定计量单位》。《计量法》第三条明确规定:“国际单位制单位和我国选定的其他计量单位,为国家法定计量单位。国家法定计量单位的名称、符号由国务院公布”。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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我国法定计量单位是建立在国际单位制基础上的计量制度。国际单位制是我国法定计量单位的主体,所有国际单位制的单位都是我国法定计量单位。Ï
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但我国法定计量单位未照搬ISO 1000和CIPM出版的《国际单位制》(第6版,1991年)的关于制外单位内容,而是根据我国实际情况,选择了16个可与国际单位制并用的非SI的单位,作为我国法定计量单位的一部分。详见表4。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×表4可与国际单位制单位并用的我国法定计量单位Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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根据国家规定,非法定计量单位只允许在少数特殊领域使用:如国际新闻、古籍和文学书籍、出口商品、个别科技领域等。Ï
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答:1)法定计量单位名称使用Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×a)法定计量单位的名称,仅用于叙述性文字和口述中,不得用于公式、数据表、图、刻度盘等处。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×b)组合单位的名称与其符号表示的顺序一致,遇到除号时,读为“每”字,例如:J/mol·K或J/(mol·K)的名称应为“焦耳每摩尔开尔文”。书写时亦如此,不能加任何图形和符号,不要与单位的中文符号相混淆。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×c)乘法形式的单位名称,其顺序应是指数名称在前,单位名称在后。相应的指数名称由数字加“次方”二字而成。例:0的名称应为“四次方米"而不是“米四次方”。用长度单位米的二次方或三次方表示面积或体积时,其单位名称应为“平方米"或“立方米”否则仍为“二次方米”或“三次方米”。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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例:℃一称为“每摄氏度”,而一般不称为“负一次方摄氏度”。Ï
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s-1的名称应为“每秒”。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×2)法定计量单位符号使用Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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一般用正体小写字母书写,但是以人名命名的单位符号,第一个字母必须正体大写。Ï
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“升”的符号“l”,可以用大写字母44 L91。单位后不得附加任何标记,也没有复数形式。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×组合单位符合书写方式举例及其说明,见表5所示。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×表5 Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×单位名称Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 符号的正确书写Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 错误或不适当的书写形式Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
牛顿米Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | N·m,INm牛·米 Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | N—m,mN,牛米,牛一米Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
米每秒Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | m/s,m·s-1, 米·秒-1,米/秒Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 秒米,米秒-1Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
瓦每开尔文米Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | W(K·m),瓦(开·米)Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | W(开·米)Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
每米Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | m-1,米-1Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 1/m,1/米Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
说明:a)分子为1的组合单位的符号,一般不用分子式,而用负数幂的形式。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
b)单位符号中,用斜线表示相除时,分子和分母的符号与斜线处于同一行内。分母中包含两个以上的单位符号时,整个分母应加圆括号,斜线不得多于1条。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
c)单位符号与中文符号不得混合使用。但是非物理量单位(如台、件、人等),可用汉字和符号构成组合形式单位;摄氏度的符号℃可作为中文符号的使用,是惟一的例外;如J/℃S可写为焦/℃。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×3)词头使用Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
a)词头的名称紧接单位的名称,作为一个整体使用,其间不得插人其他词。例如:面积单位10的名称和含义是“平方千米”,而不是“千平方米”。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
b)仅通过相乘构成的组合单位在加词头时,词头应加在第一个单位之前。例如:力矩单位kN·m,不宜写成N·hoÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã×
c)摄氏度和非十进制法定计量单位,不得用SI词头构成倍数和分数单位。他们参与构成组合单位时,不应放在最前面。例如:光量单位lm·h,不应写成h·hn。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
d)组合单位的符号中,某单位符号同时又是词头符号,则应尽量将它置于单位符号的右侧。例如:力矩单位N·m,不宜写成m·N。温度单位K和时间单位s和h在一起时,一般也在右侧oÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã×
e)词头h,da,d,c(即百、十、分、厘)一般只用于某些长度、面积、体积和早已习惯的场合,例如cm,dB等。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
f)一般不在组合单位的分子分母中同时使用词头。例如:电场强度可用MV/m,不宜用 kv/mmÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã×
g)选用词头时,一般应使量的数值处于O.1-1000范围内。 Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
h)万和亿可放在单位符号之前作为数值使用,但不是词头oÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã×
i)计算时,为方便,建议所有量均用SI单位表示,词头用lO的幂代替。这样,所得结果的单位仍为SI单位。Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×148.怎样编制审核检查表?Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×答:为提高审核活动的有效性和效率,审核员应根据分工认真准备现场审核检查表,参考格式和主要内容如下:Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×1)参考格式:见表7审核检查表。 Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×2)主要内容Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×Ï
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①审核准则要求:如审核所依据的质量手册或程序文件以及法律法规等,一般文字较多时,可填写文件名称和条款号;Ï
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编号:ZG—ZJ04—2002Ï
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NO.2002一00lÏ nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×受审部门:Ï
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审核时间:2002年04月01日8:30.12:00Ï
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序号Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 审核准则要求Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 审核要点Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 审核方法Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 审核记录Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 审核发现Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× | 备注Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã× |
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Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×受审部门负责人:××× 审核员:×××Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×②审核要点:审核此条款时审核的重点内容;Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×③审核方法:抽样方案、审核流程、方法等;Ï nkRFbbs.3c3t.com©öJÞ@½¡Ã×
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④审核记录:应准确、具体,如对不合格仪器设备的记录,应记清设备名称、编号、地点、不合格事实、陪同人员;Ï
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⑤审核发现:评价审核证据符合、不合格(类型、分级)审核准则的要求;Ï
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