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- We list main investigation as follows:1.Theoretical study on the natural circulation precooling involves complicated two-phase fluid flow and heat transfer. 1．自然循环预冷法的理论分析涉及到单相、两相流的流动和传热问题，对此不少文献都有所论述，本文对其中一些具有代表性的方法进行了讨论。
- The main investigation includes grouting compactness of prestressed ducts, concrete cover width of box girders, concrete carbonation depth and position of prestressed ducts etc. 调查的主要内容包括预应力孔道压浆密实程度、普通钢筋的保护层厚度、混凝土碳化深度以及预应力孔道位置等。
- The development of nonionic surfactants and recent main investigations of Qiqihar Light Industry Institute was briefly introduced. 并概要地介绍了非离子表面活性剂的发展和齐齐哈尔轻工学院近期的主要研究工作。
- The test of Brinell hardness and strength of plastic contact are used as the main investigative means in this paper, and little deformation of metal is presumed. 以布氏硬度实验、塑性接触变形实验为主要研究手段 ,以金属的小接触变形为假设前提。
- Since controlled delivery is legal and conforms to the value of criminal procedures,it should be the main investigative measure in the combat of drug crimes under t... 基于国内实施控制下交付时存在的困难,缉毒技术与装备、缉毒人员素质、缉毒协作需通过必要的举措予以加强。
- The main impediment to growth is a lack of capital. 影响发展的主要障碍是缺乏资本。
- Crowds thronged the main square of the city. 城里的大广场上挤满了人群。
- The whole school (was) assembled in the main hall. 全校在大礼堂集合。
- The main feature on the program is her song. 那个节目的主要号召物是她的歌。
- Fables often have animals as the main characters. 寓言常以动物为主角。
- A heavy snowfall block the main road. 一次严重的降雪阻塞了主要公路。
- The gas main explode and set fire to the house. 煤气总管爆炸引起房子失火。
- I grasped the main point of the speech. 我领会了这篇演讲的要点。
- The country's main products are gold and cocoa. 这个国家的主要产品是可可和黄金。
- Men and machines poured along the main highways. 人和机动车顺着公路如潮涌而去。
- A main feature of computer virus. 计算机病毒的一种主要特性。
- He arranged his speech under four main heads. 他把发言内容归纳成四个主要方面。
- Sheet in the main sail, a storm in coming! 收回主帆，风暴要来了！
- In the main, the pupils did well on the test. 总的来说，学生们考得很好。
- Our main task now is increasing production. 我们现在的主要任务是增加生产。
