建立了桥面裂缝之上防水层张力的计算模型，有效地计算出桥面混凝土一定宽度裂缝上防水层须具备的最小延伸率和拉伸强度。
Established the calculation model of waterproof layer tensile above bridge crack, compute a minimum extension and strength the waterproofing layer must have hi a certain width crack.
对张力辊打滑的机理作出进一步的解释，并分析了拉伸弯曲矫直机延伸率损失问题。
The sliding mechanism of the strip on the bridle was fully explained and the problem concerning the lose of elongation rate in the tension leveller was analysed.
弹性的综合测试与剩余伸长、张力和延伸率有关；
The constant ratio of elongation and tensile force is elastic modulus;
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