a portion

a portion的基本解释

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一份, 一部分

与a portion相关的网络例句 [注：此内容来源于网络，仅供参考]

Methods: A polymerase chain reaction assay with oligonucleotide primers homologous to a portion of the urease C and cytotoxin associated gene A of Hp was used to test the presense of Hp in dental plaque.

依据特异的尿素酶C 基因和 cag A基因设计引物，建立聚合酶链反应方法，检测65例慢性胃病患者不同牙齿的龈上和龈下菌斑中的Hp.6例胃Hp阳性的胃炎患者，经药物治疗后，检测口腔Hp。

By using the $ 25 intermediate market price to control intracompany transfers, the firm is able to show that a portion of this margin accrues from the efforts of Division A and a portion accrues from the efforts of Division B.

使用25美元的中间市场价来控制部门的转移时，公司能够分别列示出来自于A，B两部门的边际贡献。

Polymerase chain reaction amplification of a portion of a gene encoding a surface protein of Wolbachia was used to detect the Wolbachia infection of the population of Pteromalus puparum and Nasonia vitripennis by universal primers of wsp gene and the specific primers for wsp genes of A and B Wolbachia supergroup.

采用Wolbachia 的通用引物及A和B大组特异性引物对蝶蛹金小蜂Pteromalus puparum和丽蝇蛹集金小蜂Nasonia vitripennis体内Wolbachia的wsp基因进行PCR扩增及序列测定，并对测定的序列进行了同源性比较和基因特征分析。

与a portion相关的网络解释 [注：此内容来源于网络，仅供参考]

a portion of roast beef：一串烤牛排

83a pop concert流行音乐会 | 84a portion of roast beef一串烤牛排 | 85a primary school小学

a portion of roast beef：一客烤牛排

a plot of land 一块地 | a portion of roast beef 一客烤牛排 | a pot of soup 一锅汤

A series of pre-recorded tapes has been prepared for language laboratory use：已准备好一系列预先录制的磁带供语言实验室使用

(6)a portion of , a series of , a kind... | A series of pre-recorded tapes has been prepared for language laboratory use. 已准备好一系列预先录制的磁带供语言实验室使用. | (1)both, some, few, many, seve...