序言 如在旋转泵前,装设一种泵,在10-1毫米汞柱左右具有最大抽速,则既能缩短抽气时间,又能改用小型的旋转泵,非常有利于真空装置的抽气。D.P.L的KB-型增压泵,就是为此目的而设计的。为适应实际需要,作者于1949年末就开始这项研究工作,目前已大体上达到了予期的目的。本文将作简 Preamble Such as the pump before the installation of a pump, with about 10-1 mm Hg around the maximum pumping speed, both to shorten the pumping time, but also use a small rotary pump, is very conducive to the pumping of the vacuum device gas. The D.P.L KB-type booster pump is designed for this purpose. In order to meet the actual needs, the author started the research work in late 1949 and has largely achieved its intended purpose. This article will be simplified