他们把花园里的草锄掉,阻止其生长.They hoe the garden to keep down the weeds.他锄去了花旁边的杂草.He hoed up weeds from about the flowers.地太板了,不好锄.The ground is too hard to hoe....
The level of blood endotoxin was detected in the experiment.该实验检测血中内毒素水平。Objective To establish the bacterial endotoxin test method for cefalotin sodium for injection.目的建立注射用头孢噻吩钠的细菌内毒素检查法.Objective To establish the bac...
然而近代电子学对调谐的频率范围很宽的带通放大器提出很多要求.There is a great deal of demand in modern electronics, however, for bandpass amplifiers.滤波器. 可指定高通 、 低通 、 带通 或带阻滤波器.Filter. High - pass, low - pass, band - pass , or band - stop filter can b...