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%。
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。
In experiment, output modes of hundred-micron core diameter fiber laser are controled by the hole in the laser cavity, and the effects to beam quality are researched with holes of different diameters.
实验中，采用腔内小孔法对百微米芯径光纤激光器的输出激光模式进行控制，研究了不同孔径对输出激光光束质量的影响。
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