According to the result of GC-MS analysis, A-1, E-2 and mixed bacteria made the composition of crude oil changed obviously.

通过色谱-质谱联用分析了菌株a - 1, E - 2及三种不同菌株混合后，对原油组分变化的影响。

youdao

A flow diagram should be provided that illustrates the purification steps (i. e., unit operations) from the crude harvest (s) up to the step preceding filling of the drug substance.

应该提供一个流程图，该流程图描绘了从粗品到原料药分装前的提纯过程(即单元操作)。

youdao

The E-meter is like a crude lie detector.

BBC: [an error occurred while processing this directive]

Though they are an improvement on a computer screen, e-book readers remain crude simulacra of books.

ECONOMIST: Book publishing in America