压舱材料,道砟材料;
给某物装上压舱物( ballast的现在分词 );
The activities of maritime vessels that can be environmentally harmful include ship waste disposal, bilge pumping, tank cleaning, ballasting, power generation, and fueling.
海运船舶的活动也会对于环境造成有害的污染,包括船上废水处理、船底排水泵、油罐清洗、压舱、发电机和燃料等。
The experimental results of dual emitter ballasting using a complex emitter ballasting resistor which is provided by a diffused silicon resistor and a poly silicon resistor in silicon microwave power transistor are reported.
本文报道了采用多晶硅电阻和扩散电阻组合而成的复合镇流电阻对硅微波功率器件进行二次发射极镇流的实验结果。
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