二级品

谈进口二级品冷轧钢板和马口铁的品级鉴定及对外出证

About grade appraisal and foreign COUNTIES-ORIENTED certificate issuing of imported cold rolled steel sheet and tinplate of second grade

利用胃蛋白酶法对国产鱼粉的消化率进行了测定，得出国产鱼粉特级品的消化率在90%以上，一级品在88%以上，二级品在85%以上。

The pepsin digestibility of domestic fishmeal was tested . The result showed that the pepsin digestibility of super class fishmeal was above 90 % , that of the first class was above 88 % , and that of the second class was above 85 % .

特级品稀奶油可直接供给食用，一级品和二级品可作为加工奶油或其他食品的原料。

Suitable For : The fancy cream eatable without any processing ; Grade one and tow for butter processing & ingredients .

在年产百万吨级的工业装置上进行生产性试验，结果为抽出率达炭泥量的50%以上，溶剂回收率达90%以上，回收的增塑剂产品达到部标二级品标准。

The extracted rate of plasticizer exceeds 50 % of the activated carbon mud , the solvent recovery reaches 90 % and the quality of reclaimed plasticizer products is suitable to the standards concerned .

工作对照品（也就是内部标准品或二级标准品）是根据一级对照品标定的，并用来代替一级对照品的。

A working standard ( i.e. , in-house or secondary standard ) is a standard that is qualified against and used instead of the reference standard .

二级减速原品采用的是美国产Hindley蜗杆传动。经过改造后采用平面二次包络蜗轮副传动。

The original two stage reducer was the worm gear by Hindley U.S.Now the secondary plane envelope ring surface worm gear pair is used in substitute of the original one after the revamp .

采用一步结晶法从粘胶纤维生产的酸浴中直接提取无水硫酸钠，产品符合GB6009-91二类一级品的要求。

Sodium sulfate was extracted directly from the acid bath of viscose fiber by one step crystallization .

二级参考标准品应用适当的方法制备，鉴别，检测，批准并储存。

Secondary reference standards should be appropriately prepared , identified , tested , approved , and stored .