有金属部件的照明装置都应该走地线。Light fittings with metal parts should always be earthed.现在波音757飞机的组成部件将由波兰工人制造。Polish workers will now be making component parts for Boeing 757s.这架飞机的部件将在世界各地制造。Parts for the aircraft will be made all r...
The gas contains blow - by, sludge, acids, oil, and other contaminant.这些气体包括窜缸气体, 沉积物, 酸, 机油和其它杂质的气体.Modification of rinsing techniques by installing cascading or counter - current rinse systems increases the contaminant...
His face puckered , and he was ready to cry.他的脸一皱，像要哭了。His face puckered, the tears leapt from his eyes.他皱着脸, 眼泪夺眶而出.She puckered her lips into a rosebud and kissed him on the nose.她双唇努起犹如一朵玫瑰花蕾，在他的鼻子上吻了一下。...
Radioactivity is the ejection of particles or radiation from the nucleus.放射性是原子从核中射出粒子或辐射的现象.Most of the crater is formed by ejection.大多数的弹坑是由于把泥土抛出而形成的.A rocket is propelled by the ejection of a portion of its mass to t...
She spoke in a low voice, always without inflection.她低声说话, 总是声调平平无抑扬变化."Seb?" he said, with a rising inflection.“是塞伯吗？”他扬声问道。The man's voice was devoid of inflection...那人的声音缺少抑扬变化。'Seb?' he said, with a ri...