以下为句子列表：
英文: After closing a gate valve with sufficient force to develop shutoff, the stem should be backed off slightly (1/8 to 1/4 turn) to relieve stem load.
中文: 在以足够的力量关闭闸阀后，应该是阀杆稍微回转一点(1/8至1/4转)，以减轻阀杆的负载。
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英文: The amount we charge for shipping, whether given as a fixed rate or calculated after closing for the individual buyer, INCLUDES our costs in materials and packaging.
中文: 数额我们运费,是否有一个固定利率或计算结束后,让个人买家包括生产成本,在材料和包装.
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