stem extension meaning in English

加长轴杆
茎秆伸长

1 cpvc housed stem extensions are not intended for the horizon ball valve series
1 cpvc封装的阀杆加长件并不用于水平球阀系列。
A gear operator may easily be mounted on top of the external support plate of all stem extensions
一个齿轮操作机构可以容易的安装在所有阀杆加长件的外部支撑板的顶部。
The 29240018 gear operator and the 29241014 drive bushing should be used on the stem extensions for all ball valves
对于用在所有球阀上的阀杆加长件，应该采用29240018齿轮操作机构和29241014驱动套管。
General ? for both the basic and cpvc housed stem extensions , the bottom rod coupling utilized for all ball valve extensions is fitted with turning - stops
一个齿轮操作机构可以容易的安装在所有阀杆加长件的外部支撑板的顶部。
For the larger ball valves , as well as all butterfly valves , the appropriate butterfly valve handle and index plate are supplied for manual operation of the stem extensions
对于用在所有球阀上的阀杆加长件，应该采用29240018齿轮操作机构和29241014驱动套管。