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Load-deflection diagram. Plot of load vs corresponding deflection.
负荷挠度图。是指负荷与相应挠度的关系图。
Loss factor. Ratio of the real and imaginary components of complex modulus. Term is used in connection with dynamic tests to determine damping capacity of materials and combinations of materials. An alternate term is loss tangent.
损耗系数。是指复数模量的实部与虚部之比。该术语与动态试验结合使用，以确定材料和材料组合的阻尼性能。它又称为损耗角正切。
Loss modulus. Imaginary component of complex modulus. It takes into account mechanical energy dissipated as heat during deformation of a material under dynamic loading.
损耗模量。复数模量的虚分量。它考虑了材料在动态负荷作用下变形时以热的形式耗散的机械能。
Loss tangent. An alternate term for loss factor.
损耗角正切。是损耗系数的另一个术语。
Low temperature brittleness test. A method for measuring the resistance of rubbers and rubber-like materials to brittle cracking at low temperatures. Specimens are exposed to a specified temperature for 4 hr and flexed. Results are reported as failure or non-failure at specified temperatures. (ASTM D-736).
低温脆性试验。是指一种测量橡胶和橡胶类材料在低温下抗脆裂性的方法。将试样置于规定的温度下暴露4小时并弯曲。规定温度下，其结果以故障或非故障形式记录。(ASTM D - 736)。
Low temperature compression set. Measure of the ability of vulcanized rubber loaded at room temperature and subsequently subjected to prolonged exposure at low temperatures to recover from deformation at the low temperature. It is the % compressive deformation retained by a specimen subjected to the standard test set out in ASTM D-1229. The test simulates conditions encountered by seal and gasket materials used in aircraft and submarines.
低温压缩永久变形装置。测量硫化橡胶在室温下负荷，随后在低温下长时间暴露，并在低温下从变形中恢复的能力。它是试样在经受ASTM D-1229规定的标准试验后所保持的压缩变形百分比。该试验模拟了用于飞机和潜艇的密封件和垫片材料所遇到的状况。
Low temperature stiffening. Measure of the effect of temperature change on the stiffness of rubber and rubber like materials. It is usually reported as the temperature at which a material has a specified relative modulus. (ASTM D-1063). See also Gehman torsional test.
低温硬化。测量温度变化对橡胶和类橡胶材料硬度的影响。它通常记录为材料具有特定相对模量的温度。(ASTM D - 1063)。此外，具体详情，也可以参阅Gehman扭转试验。
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