The paper simply introduces the evacuation system for model H-600 electron microscope and analyzes the program of evacuation and the program control circuit.
文章简要介绍了日立h - 600型电子显微镜抽真空系统，分析了抽真空程序及其程序控制电路。
The Model H line launched with a durable four-cylinder engine that helped build Chevrolet's reputation as a dependable car. The basic design would power Chevrolets through 1928.
搭载耐用的四气缸发动机的H 型汽车，为雪佛兰赢得“ 坚固可靠” 美誉的同时，亦推动了雪佛兰品牌的迅猛发展，直到1928 年。
The demonstration by a computer model that water exists in two different microscopic constructions is a "wonderful discovery, " adds physicist H. Eugene Stanley of Boston University.
波士顿大学（Boston University）的物理学家H.犹金.斯坦利（H. Eugene Stanley）说，这个计算机模型对水存在于两种不同微观结构的演示是一个“伟大的发现”。
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