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- The paper was introduction fatty primary secondary amine of secondary amines and production process and application. 本文介绍了脂肪仲胺的反应原理、生产工艺及其应用。
- DDTs in soil were extracted with acetone/hexane (1:1, v/v) using ultrasonic extraction and removed many polar matrix components using primary secondary amine (PSA) effectively for the purity. 样品用丙酮/正己烷(1:1,v/v)超声波提取,然后用固相材料吸附净化,用GC-MS(选择离子方式)测定。
- The Study of Breaking Characteristic of Short Circuit Fault on Secondary Transformer. 变压器二次侧短路的开断特性研究
- Primary coil induces current in secondary coil. 初级线圈在次级线圈中产生电流。
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- Master databases from the primary to the secondary. 数据库从主服务器还原到辅助服务器。
- Some are primary and others are secondary. 一些是主要的另一个比较次要。
- Matter is primary and consciousness is secondary. 物质是第一性的，意识是第二性的。
- The little boy left primary school at eleven. 这个小男孩十一岁时小学毕业。
- Sure. We are friends since primary school. 当然，我们从小学就是朋友了。
- I started primary school when I was 5 years old. 我五岁时开始读小学。
- A primary cause of Tom's failure is his laziness. 懒惰是汤姆失败的主要原因之一。
- Primary school teachers use a lot of visual aids. 小学教师使用大量的视觉教具。
- Love and hatred are primary emotions. 爱和恨是基本的情感。
- The Democratic primary was held this month. 民主党候选人初选於本月举行。
- An electrical transformer in which the primary and secondary coils have some or all windings in common. 自耦变压器一种电力变压器，其初级线圈与次级线圈部分或全部共用
- Primary education comes under the umbrella of local government. 小学教育受地方政府的保护。
- He only accepted the primary education off and on in his childhood. 他小时候只断断续续地接受过初等教育。
- The primary reason for advertising is to sell more goods. 做广告的根本目的是要多出售货物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初选中就被他的对手击败了。
