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- The paper was introduction fatty primary secondary amine of secondary amines and production process and application. 本文介紹了脂肪仲胺的反應原理、生產(chǎn)工藝及其應用。
- 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. 樣品用丙酮/正己烷(1:1,v/v)超聲波提取,然后用固相材料吸附凈化,用GC-MS(選擇離子方式)測定。
- The Study of Breaking Characteristic of Short Circuit Fault on Secondary Transformer. 變壓器二次側短路的開(kāi)斷特性研究
- Primary coil induces current in secondary coil. 初級線(xiàn)圈在次級線(xiàn)圈中產(chǎn)生電流。
- The disease is still in its primary stage. 這疾病仍然在初發(fā)階段。
- Master databases from the primary to the secondary. 數據庫從主服務(wù)器還原到輔助服務(wù)器。
- Some are primary and others are secondary. 一些是主要的另一個(gè)比較次要。
- Matter is primary and consciousness is secondary. 物質(zhì)是第一性的，意識是第二性的。
- The little boy left primary school at eleven. 這個(gè)小男孩十一歲時(shí)小學(xué)畢業(yè)。
- Sure. We are friends since primary school. 當然，我們從小學(xué)就是朋友了。
- I started primary school when I was 5 years old. 我五歲時(shí)開(kāi)始讀小學(xué)。
- A primary cause of Tom's failure is his laziness. 懶惰是湯姆失敗的主要原因之一。
- Primary school teachers use a lot of visual aids. 小學(xué)教師使用大量的視覺(jué)教具。
- Love and hatred are primary emotions. 愛(ài)和恨是基本的情感。
- The Democratic primary was held this month. 民主黨候選人初選於本月舉行。
- An electrical transformer in which the primary and secondary coils have some or all windings in common. 自耦變壓器一種電力變壓器，其初級線(xiàn)圈與次級線(xiàn)圈部分或全部共用
- Primary education comes under the umbrella of local government. 小學(xué)教育受地方政府的保護。
- He only accepted the primary education off and on in his childhood. 他小時(shí)候只斷斷續續地接受過(guò)初等教育。
- The primary reason for advertising is to sell more goods. 做廣告的根本目的是要多出售貨物。
- Collins was nosed out by his opponent in the primary. 柯林斯在初選中就被他的對手擊敗了。
