我们所有的飞机都有适航证书。All our aircraft have certificates of airworthiness.适航审定主要包括型号合格审定和生产许可审定及其他工作.Airworthiness certification includes Type Certification and Production Certification , and other related work.经审查合格的,发给出口适航证书.A...
Most of us need to lead more balanced lives to be healthy and happy...我们中大多数人需要过更为平衡的生活，以保持健康和快乐。The motion of the rotor can be balanced completely with rotating counterweights attached to the crankshaft.使用连接在曲轴上的转动平衡块,转...
化学性质取决于核外的电子.The chemical properties depend upon the electrons on the outside.自噬消化的是除胞核外的其他细胞器.Autophagy kills by degrading those other organelles while sparing the nucleus....
男孩们蜷缩在楼上的小卧室里睡熟了。The boys are curled asleep in the small bedroom upstairs.我被赶到了楼上的小卧室。I was banished to the small bedroom upstairs.他们将废品间清理用作小卧室.They cleared out the junk room to make a tiny beds....