不及物动词

1. （确定物质纯度的）检验,化验,分析
An assay is a test of a substance to find out what chemicals it contains. It is usually carried out to find out how pure a substance is.

1. a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components
frequently used to test for the presence or concentration of infectious agents or antibodies etc.

2. an appraisal of the state of affairs

e.g. they made an assay of the contents
a check on its dependability under stress

Synonym: check

3. a written report of the results of an analysis of the composition of some substance

4. a substance that is undergoing an analysis of its components