游丝外夹
Studies were conducted on the applied techology of plant growth regulator in the key link of toon production in greenhouse.
探讨了植物生长调节剂在香椿日光温室生产主要生产环节上的应用技术。
It is an endogenesis hormone that is the key regulator of calcium calcium, phosphorus, and bone metabolism.
骨化三醇是维生素D的活性形式,是调节钙磷代谢重要的内源性激素。
The paper presents the basic principle and the features of a direct-acting temperature regulator, and analyses its sensor construction as a key element. The paper also makes a comparision of dynamic behavior between the different sensors in construction.
介绍了自力式温度调节阀基本原理和特点,分析了关键元件温度传感器的结构,并对不同结构温度传感器的动力特性进行了对比。
英语网 · 日常口语
英语网 · 双语新闻
英语网 · 双语娱乐资讯