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＠杨文彬￥南京化工大学（续第１０期）１引言热胀冷缩是工程材料的普遍性能。由于温度变化而引起的构件长度或体积变化，可能导致机械发生故障，例如钟的摆杆因热胀冷缩将影响其摆动频率，从而影响其计时精度。精度很高的支承或导轨会因温差引起的不均匀热变形而卡死，或造成过...
@ Yang Wenbin ¥ Nanjing University of Chemical Technology (continued No. 10) 1 Introduction Thermal expansion and contraction is the universal performance of engineering materials. Due to temperature changes caused by changes in component length or volume may lead to mechanical failure, such as bell pendulum due to thermal expansion and contraction will affect the swing frequency, thus affecting the timing accuracy. High-precision support or guide rail due to temperature differences caused by uneven thermal deformation and stuck, or caused ...