When the simple wire-pulling device for driving curtain is installed and used, the curtain can be opened towards both sides as required and the curtain can also be opened towards one side.

适合各种规格的窗口使用，安装使用时，根据需要窗帘可以向两边开，也可以向一边开。

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The sequent wire-pulling is used in electric powered rig as it has smooth lifting system and cross wire-pulling is used in mechanical rig as balanced force relief impact force by compressed ai.

顺穿法一般在电动钻机上采用，主要考虑到电控操作提升系统比较平稳； 花穿法一般在机械钻机上使用，以受力平衡来缓解气控操作带来的冲击载荷的影响。

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"I brought an extra mask and stick," said Ron, pulling a heavy wire mask over Mikey's head.

“我多带了一个头盔和一根冰球棍儿。”罗恩说道，然后把头盔往米奇头上套。

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Tensegrity refers to the balance of pushing and pulling forces--the metal pushes, the wire pulls--that work to maintain a flexible, elastic shape.

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