Life must be the ever-burning lamps of knowledge is an opening direction.
人生必须的知识就是引人向光明方向的明灯。
The size and position of the cross section of support beam, the opening direction of beam channel.
表面处理形式、状态;支撑梁的截面尺寸和位置,槽钢的开口方向。
The flow to open design is adopted, and the medium flow direction tends to the opening direction of the valve with good controllability of small opening and low flow characteristic distortion.
采用流开式设计,介质趋向于阀门开启的方向,小开度可控性好,流量特性畸变小。
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