The man unlocked a gate set in a high wall and let me through...那名男子打开了高墙中一面大门上的锁让我进去。John then unlocked the front door and I started to follow him up the stairs...约翰接着打开前门，我开始跟他上楼。She unlocked the case and carefully lif...
煤矿中天然存有高爆气体。Highly explosive gas is naturally found in coal mines.许多人到煤矿来,是因为契约规定必须服务几年.Many people came to the coal mineindentured for several years.煤矿工人须在地下工作.Coal miners have to work under the ground....
The rocks are disintegrated by frost and rain.风霜雨露使岩石分化.It can be used for devising systems to protect against frost damage.它可用来设计防止霜害的方法.Just before the frost farmers everywhere rushed to give the land a good watering.就...
A flexural oscillation model about V - shaped silicon electro thermal microactuator is presented.提出了V型电热硅微致动器的弯曲振动力学模型.According to Mechanics theory the formulary of flexural rigidity, axial rigidity, shearing rigidity a...