注意：吊车发动机处于运行中，且载人平台内有人时，吊车司机必须始终控制着吊车。
Note: the crane operator must always be at the controls when the crane engine is running and the personnel platform is occupied.
根据所得结论，在简化的客车有限元模型上的适当位置安放次级声源，对因发动机振动激励引起的噪声进行车内有源消声的仿真分析。
Simulations about reducing noise excited by engine revolution are done by laying secondary source at proper places on the simplified finite element model of a passenger car.
用数值方法模拟了液体火箭发动机燃烧室内有无隔板两种情况的热态解。
The hot flow fields in liquid rocket engine combustion chamber with and without baffles are simulated numerically.
应用推荐