The error in division, screening and drying processes in process of preparing coal sample is analysed. The reasons of error and the corresponding countermeasure are put forward.

分析了煤样制备过程中误差的来源，包括制备过程中的缩分误差、 筛分和干燥过程中产生的误差等，并对误差产生的原因提出了相应的对策。

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We use traditional enrichment, screening, purification methods to select 10 degrading bacteria of 8 kinds of phenolic compounds from a soil sample polluted by phenol wastewater.

本研究利用传统的富集、筛选、纯化的方法，从受含酚废水污染的土壤中筛选出了8种酚类化合物的10株降解菌。

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This test method was developed with 135 engine through screening the test condition, evaluating tests of reproducibility and distinctiveness of oil sample.

该试验方法用1 35发动机经调试、试验条件的筛选、油样的重复性、区分性评定试验等研制而成。

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The test for high risk HPV is done on the cervical screening sample, which means that women will not notice anything different when they have their regular cervical smear test.

BBC: New cervical cancer test introduced in Isle of Man

In May Merck published details of a new antibiotic gleaned from a soil sample from South Africa after screening 250, 000 natural extracts.

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