gas drive短语¹⁴⁴⁹⁷²⁺² 基本例句 气体驱动,气驱 This paper introduced a heavy load and super-length journey, high stability required lift telescopic cylinder and the principle of its pneumatic gas drive control system. 本文给出了负载较大、行程超长、稳定性要求高的举升式伸缩气缸及其气动控制系统的原理及部分关键部位的优化设计方案。 cnki