... 伸长杆 extension rod 增设装置，电话分机 extension set 伸长杆 extension stem ...
基于12个网页-相关网页
extension stem-operation 伸长杆操作
stem extension assembly 阀杆延伸组件
stem extension 加长轴杆
valve stem extension 气门杆伸出部
The top flange of an extension stem, plug shaft diameter, and distance across flats on plug shaft are the same size as the valve selected.
订购时，请指明阀门尺寸、规格型号，以及从阀门法兰到延长件法兰顶部的准确距离（用户指定的长度如右图所示）。
youdao
Andrea Kneer-Rice is a 4-H educator at the University of Maryland Extension, with a focus in STEM education.
WHITEHOUSE: Every Opportunity
应用推荐
模块上移
模块下移
不移动