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- US Army New Training Helicopter(NTH)is a non-developmental item commercial helicopter which is to replace Bell UH-1H as an initial en- try rotary wing and primary instrument trainer. 美国陆军新型教练直升机是一个非新研项目的批量生产直升机,用以取代初级训练及仪表飞行训练用的贝尔 UH-1H。
- Sediment cores as a h-aditional and primary instrument for studying the sedimentary environments and depositional processes of tidal flat are taken generally by gravity corer in inter-tidal flat. 研究潮滩沉积环境和沉积过程的传统的、主要的手段是采集柱状样；
- As an important part in the software engineering, software testing is the primary instrumentality to guarantee the quality and reliability of the software. 软件测试作为软件开发过程的重要环节,是保证软件质量,提高软件可靠性的重要手段,软件开发技术的发展,也必然会带动软件测试技术的发展。
- The disease is still in its primary stage. 这疾病仍然在初发阶段。
- primary instrumental conditioning 基本工具式条件作用
- 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。
