• 1. backward tension: 反张力 | 反拉力
• 2. backward tension prestress construction: 后张法预应力施工

• 1.The influences of strip thickness, forward and backward tension, reduction ratio and resistance to deformation on the edge drop were investigated in detail.
  详细研究了带钢厚度、张力、压下率、变形抗力等对边缘降的影响。
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• 2.This article mainly studies the phenomenon of width reducing of aluminium and aluminium alloy material which is rolled by 4-high non-reverse cold rolling mill with more forward and backward tension.
  研究了铝及铝合金板带材经带有较大前后张力的四重高速不可逆冷轧机轧制后产生宽减的现象。
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• 3.The reasons of hand leaving in horizontal bar giant swing backward such as technical error and muscle tension etc. Were analyzed.
  单杠向后大回环脱手的原因主要是倒立后摆阶段抬头、挺胸、塌腰和悬垂前摆时翻腕等技术错误，以及思想和肌肉过度紧张等。
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