mass noun
1- the testing of a metal or ore to determine its ingredients and quality（对金属或矿石的）检验, 测定：
submission of plate for assay.
递交金属片以供检验。
1.1
- count noun a procedure for measuring the biochemical or immunological activity of a sample（样品的）生化（或免疫）活度测定：
each assay was performed in duplicate
每一免疫活度测定都做了两次
mass noun the results of sequential assay of serum were analysed对血清的顺序生化测定结果作了分析
immunofluorescence assay.
免疫荧光测定。
with obj.
1
- determine the content or quality of (a metal or ore)确定（金属, 矿石）的成分（或品质）。
1.1
- determine the biochemical or immunological activity of (a sample)测定（样品的）生化（或免疫）活度：
cell contents were assayed for enzyme activity.
对细胞实体作了酶活度测定。
1.2
- examine (something) in order to assess its nature检查（以确定性质）：
stepping inside, I quickly assayed the clientele.
我一进门就把委托人迅速打量了一番。
2
- archaic attempt〈古〉尝试, 试图：
I assayed a little joke of mine on him.
我试着和他开了个小小的玩笑。
派生词
assayer
noun词源
Middle English （in the general sense 'testing， or a test of， the merit of someone or something'）： from Old French assai (noun)， assaier (verb)， variant of essai 'trial'， essayer 'to try' （see ESSAY）.