词汇	blackground screen
释义	blackground screen 黑底荧光屏
随便看	Direct Only direct on starter direct-on starter direct on starting direct-on starting direct-on-time switching direct open cycle direct operand addressing direct-operated direct operated proportional relief valve direct-operated regulator direct-operated relief valve direct operated solenoid valve direct operatiion direct operating controller direct-operating controller direct operating cost Direct Operating Costs direct operating expense direct operating expenses direct operating mechanism direct operation direct operational cost Direct Operational Exchange-Tactical direct operation cost