调节旋钮 meaning in English

adjusting knob

The hand pump consists of a cylinder , a piston , a pressure release valve , a fine adjustment and the handles
手动泵由一个气缸一个活塞一个压力释放阀精细调节旋钮和把柄组成。
The original ld2 has been replaced and updated ( 4 revisions to date ) and the sound has changed . i did not find my unit tended to be warm
我同意音量调节方面需要改进.金属做的音量调节旋钮质量不算最好不过有凹槽增加摩擦力.如果买到金属涂料的那脱漆问题也可以解决
I agree that the volume pot could benefit from an improvement . the knob is not the best but it is metal and has grooves for improved grip . if you get one of the metallic paints you will improve your chances against flaking
我同意音量调节方面需要改进.金属做的音量调节旋钮质量不算最好不过有凹槽增加摩擦力.如果买到金属涂料的那脱漆问题也可以解决