新鲜空气的康复功效the restorative power of fresh air飞机须克服空气的阻力.An aircraft has to overcome the resistance of the air.空气的激流导致飞机翻转.The turbulence caused the plane to turn over....
如图所示,存在于几乎全部肝细胞中的淡褐色细小颗粒状色素称为脂色素 ( 脂褐素 ).The pale golden brown finely granular pigment seen here in nearly all hepatocytes is lipchrome ( lipofuscin )....
学生将有两份报告及一次可翻书的期末考.You will have two papers and an in - class open book final exam.最近, 许多读者使用可用手掌的仪器取代了翻书的传统读书方式.These days , instead of turning paper gagespages, many readers reachhand - held handheld devices.他不停地翻书,直到找...
Electric vehicle ( EV ) chargers are highly linear power system load.电动汽车 充电机是非线性的设备,工作时产生的谐波电流很高.The systematical design of the test stand for chargers is expounded.阐述了充电机试验台的系统设计,介绍了充电机性能试验的检测项目.All kinds of mobile pho...
换向器和炭刷应无脂或其他污物.Commutator and brushes shall be free of grease, or other contaminants.使用欧姆计,检查在换向器之间电阻.Using an ohmmeter check the resistance between the segments of the commutator.如果不是的话, 那一定是换向器表面有问题了.If not, the troubl...