It points out that the position of the maximum strain, stress and tension is at first group trough type roller, not at passing poion of pulley if the head drum works as pulley.

指出在头部滚筒作为驱动滚筒的布置系统中，胶带最大应变、力及张力位置不在驱动滚筒相遇点，而在过渡段第一组槽形托辊处。

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You head outside after a snowstorm and see dozens of log - or drum-shaped snowballs.

假如你在一场雪暴后外出或许能见到许多圆木状或鼓形的雪球。

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There will be a drum head service and an address from the chief of the defence staff and the day will conclude with one of the biggest tri-service flypasts of the Queen's reign.

BBC: Diamond Jubilee cake baked for Queen

Before dusk, head west toward the Drum and Bell Tower, located at the south of Hou Hai lake on Gulou Dajie, where you can wiggle your way down the hutongs once more.

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Evidence bore out what they had told me: turning my head obviously and unsubtly around always stopped the rotation of the drum.

NEWYORKER: All That