这对于用步进电机作为驱动装置的数字阀的开发研究与应用具有深远的意义。
It has profound significance in the development, research and application of the digital valve which USES stepper motor as its driver.
VTLEBUF 01型电动高真空蝶阀是以电动装置驱动阀杆与阀板执行启闭动作。
VTLEBUF01 electric high vacuum butterfly valve USES electric device to drive the stem disc to perform open close action.
金属硬密封球阀除了具有防止误操作、防止阀杆飞出、设置驱动装置安装平台等结构特点外，还具有如下独特的特点。
Except for such features as wrong operation prevention, stem blow-out proof, mounting, pad provided, the metal to metal sealed ball valves made by WILLIAMSON possess the following unique features.
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