Red ribbon forms a knot in the centre of the cogwheel.齿轮的中心交结着红绶.A cogwheel is placed where the wheat and rice stems cross at the base.齿轮安在下方麦稻杆的交叉点上....
介绍了送风机状态监测及故障诊断系统.The situation monitoring and trouble diagnosis systems are introduced.一般通风设备 、 空调箱 、 送风机等.General Ventilators , Mark - up air systems , Fan coil unit etc.加压送风机 ( 补风 ) 与排烟风机联锁控制.Pressurized ventilator ( ...
When deposited , 70 - 80 % of the volume of muddy sediments may be water.泥质沉积物沉积后, 体积的70-80%是水.Loose sediments may be changed into solid sedimentary rocks.松散的沉积物可以变成坚硬的沉积岩.The sediments are detrital.沉积岩为碎屑质.Larix pollen ...