Dependant on their position in the circuit they can provide meter-in meter-out or bleed-off control. 依靠他们在回路中的位置,可提供量入量出和旁伸控制。
The effects of distortion control in welding thin aluminum alloy plates by two kinds of thermal tensioning were investigated. 对两种形式的温差拉伸控制铝合金薄板焊接残余变形的效果和规律进行了研究。