The content of hydrogen in steel decreases with increasing the ageing time.
随着时效时间的延长，盘条中氢含量逐渐降低；
The relationships between damage energies of HTPB propellants and storage ageing time were investigated by uniaxial repeated tensile test.
由单轴反复拉伸试验分别研究了含键合型防老添加剂和防老剂h的HTPB推进剂破坏能与贮存老化时间的关系。
The maximum tensile strength and yield strength were gained at peak-ageing, in addition, the elongation decreased with the extension of ageing time.
峰时效时合金的抗拉强度和屈服强度达到最大值，断后延伸率随时效时间的延长有下降的趋势。
The results showed that the influence factors on whiteness of pulp were breaking temperature, breaking time, ageing time, amount of deinking agent and times of washing.
结果表明：影响回收纸浆白度的因素主要有碎解温度、碎解时间、熟化时间、脱墨剂用量、洗涤次数；
The relationships between specific heat of PU rigid foam at low. temperature and such parameters as those of temperature, density and ageing time, etc., have been discussed.
讨论了聚氨酯硬泡沫塑料低温比热与密度、温度以及空气中存放时间等参数的关系。
The results show that amine content increases with ageing time and polyurethanes based on aromatic isocyanate has much better ageing resistance than ones based on aliphatic isocyanate.
芳香族异氰酸酯制成的聚氨酯比脂肪族异氰酸酯的耐老化性能好得多。
The results show that amine content increases with ageing time and polyurethanes based on aromatic isocyanate has much better ageing resistance than ones based on aliphatic isocyanate.
芳香族异氰酸酯制成的聚氨酯比脂肪族异氰酸酯的耐老化性能好得多。
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