Through the new structure of adding feedback cavity on valve core, adjustment windage is less than 10 percent.
通过这样的新型结构——在阀芯上增加反馈腔，使其调压偏差不超过10%。
2
The wax positive is invested with a mold made of refractory materials and heated to melt the wax, leaving a narrow cavity Between the core and the investment.
正蜡像外面披盖一个耐火材料制成的模具，然后加热使蜡熔化，留下核心与披盖模具之间一个狭窄的空腔。
3
The main functional elements of the die and mold include the core and cavity, which impart the desired geometry to the incoming melt.