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1·This example shows a troughing idler with the conveyor belt running to the left.

本例显示了皮带向左侧跑偏的情形。

2·Now the training effect takes place and the conveyor belt does what it is told to do by the center roll of the troughing idler.

现在实质性的影响发生了，皮带会延着中心托辊设定的路线运行。

3·The only part of the troughing idler that hs any training effect on the conveyor belt is the center roll indicated by the arrow.

如图中箭头所示：槽形托辊组成中对皮带运行有实质影响的唯一部分就是中心托辊。

4·Concave curves in conveyors have the tendency to lift the conveyor belts out of the curves and the troughing idlers, resulting in Big Problems.

这样形成的凹曲线在运行中有使皮带脱离槽形托辊和机架形成的轨迹，结果造成大问题。