This paper describes the principle of microprocessor ultrasonic range finder.主要介绍微电脑超声测距仪的工作原理.A Control System of VVVF Elevator with Single Chip Microprocessor and PLC.PWM逆变器 型交流电梯紧急自动疏散系统.I’ve got a typerwriter with a ...
目前，30%的爬行动物、鸟类和鱼类面临灭绝的危险。30 percent of reptiles, birds, and fish are currently threatened with extinction.这将导致马鹿的灭绝。It's going to be the death knell of the red deer.这次原油泄漏可能会使波斯湾的海龟灭绝。The spill could wipe out the Gu...
He did not want to be behindhand in generosity.他不愿在慷慨大方方面落于人后.His business faculty is small, and he is behindhand in his circumstances.他的经商才干有限, 他已捉襟见肘.Poor Dr Pegler got terribly behindhand with his appointments.可怜的佩格勒博...