ballast n.压载物,压舱物底货,压舱货...ballast resistor 镇流器;镇流电阻器...ballast leakage resistance 石渣泄漏电阻...ballast(float) valve tray 重盘式浮阀塔板...ballast leakage 石渣泄漏...ballast float valve tray 重盘式浮阀塔板...ballast lamp 镇流灯...in ballast 空载,放空...ship in ballast 船舶放空...
交流互动
发表言论