封闭式卷轴可以调整导向开口方向？
Can I adjust the guide opening position on an enclosed model hose reel?
请站在这儿，先盖上左眼，告诉我这些字母的开口方向。
Please stand here. Cover your left eye first, and tell me the direction of the opening.
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 size and position of the cross section of support beam, the opening direction of beam channel.
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