描述两个功率电平比值的单位.A unit that describes the ratio of two power levels.要使计数器正常工作,正向和逆向控制输入电平必须始终相反.For proper operation the forward and reverse direction - control inputs must always be complementary.如旁瓣电平过大,很多科研工作者都在设法解决这些问题...
They make compost out of all kinds of waste.他们用各种废料制造堆肥。Cut down and compost spent cucumbers, tomatoes and other crops.将已收获过的黄瓜、西红柿和其他作物的秧蔓割下，制成堆肥。In May, mulch the bed with garden compost.五月，在苗圃里施上肥。...
他是个胆小的、没勇气的可怜虫.He was a yellow gutless worm.他需要动用所有的职权防止那些胆小的志愿兵逃跑。He would need all his authority to keep the weak-kneed volunteers from bolting.我毫不怀疑那个胆小的家伙巴不得撒手退出呢.I had no doubt that the craven fellow would be only t...