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- Heat produced by burning coke is used to continue the primary reaction as the hot catalyst is circulated back to the reactor and provides the heat of reaction for the cracking reaction. 燃烧的焦炭所产生的热量使主反应持续地进行，同时热的催化剂流通回到反应器并为之提供热量。
- The results showed that ester-amide exchange，alcoholysis and polycondensation were primary reactions. 结果表明：主要反应为酯-酰胺交换、醇解和缩聚反应；
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- 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。
- 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。
- Not derived from something else; primary or basic. 基本的不是从它物派生的; 原本的或基本的
- We lost the New Hampshire primary. 我们在新罕布夏州的初选失利了。
- We regard husband and wife as the primary units of the family. 我们把夫妻视为家庭的基本成员。
- My father is a headmaster of a primary school. 我父亲是小学校长。
- The demand for primary products is on the increase in European market. 欧洲市场对初级产品的需求在增长。
- accelerated primary reaction 种痘原发反应
