The current lags behind the voltage.电流滞后于电压.If the input voltage is plus three , it comes out as minus six.如果输入的电压是+3伏, 那么输出的电压便是-6伏.The units in which we show voltage and current are volt and ampere respectively.我们用以表示电...
Steroids are used to reduce the inflammation, which makes the muscles of the airways liable to constriction.类固醇用于消除可能导致气道肌肉收缩的炎症。The pain is produced by constriction of the blood vessels.这种疼痛是由于血管的收缩而引起的。a constriction i...
He died, literally , at the chalkboard at age 83.他过世了, 83岁的时候, 在黑板前.Then one morning we were working math problems at the chalkboard.后来有一天早晨,我和玛丽在黑板上写下了数字题目.The map was drawn on chalkboard with ink - markers.那张地图用记号笔画在一块...