反向途径方向(Reverse Direction)-------把选定途径的方向反向 纠正途径方向(Correct Direction)-------用来把途径的默许途径（即对矩形、圆形、星形工具）的一种...
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截水环：防止集中渗流，在外围设置，以改变水流方向，增加渗径，减小渗流。
Section water ring: prevent concentration in the peripheral Settings, seepage, to change the direction of flow, increasing permeability diameter, reduce the seepage.
在管径恒定的情况下，加长真空管的长度是增加太阳能热水器总得热量的有效途径和方向！
In the case of constant pipe diameter, lengthening the length of vacuum tube is an effective way to increase the total heat of solar water heater!
TIMKEN调心滚子轴承具有两列滚子，主要承受径一载荷，同时也能承受任一方向的轴向载荷。
TIMKEN-aligning roller bearings with two rollers, the main path a load to bear, but also can withstand axial load in either direction.
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