If the valve body material can be welded, but very different thermal expansion coefficient, or changes in operating temperature range of a larger thread junction closure weld must be honey.
如果阀体的材料是可以焊接的，但膨胀系数差异很大，或者工作温度的变化幅度范围较大，螺纹连接部必须进行蜜封焊。
Industrial refrigeration unit is big changes in temperature and pressure range, running speed of the larger situation.
工业制冷机组是在温度、压力变化范围较大、转速较大的情况下运行的。
This article deduces in theory the influence of water flow changes on the temperature heating room and range of the permitted fluctuation of the hydraulic imbalance degree of pipeline.
为此从理论上导出了水流量变化对供暖房间温度的影响以及管路水力失调度允许波动的取值范围。
However, many devices work in the environment which the temperature changes in a larger range, the change of temperature will cause the crystal oscillator's frequency shift.
但是，许多设备工作在温度范围变化较大的环境中，由于石英晶体谐振器自身特殊的物理特性，温度的变化会导致晶体振荡器的频率发生偏移。
Determination results indicate: individual changes in the range of temperature between 2.7 degrees within the normal human body temperature is high or low, there are subtle differences.
测定结果标明：个体之间体温变化范围在2.7度之内，都是正常的人的体温高低，有细微的差别。
Range of seasonal temperature changes exits some differences, but does the same trend, in which the largest increase in average temperature is in spring;
四季气温变化幅度存在一定的差异，但是却具有相同的变化趋势，其中春季平均温度增幅最大；
Range of seasonal temperature changes exits some differences, but does the same trend, in which the largest increase in average temperature is in spring;
四季气温变化幅度存在一定的差异，但是却具有相同的变化趋势，其中春季平均温度增幅最大；
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