求翻译：在衡器和仪表中使用的弹簧，为了满足其精度不受温度变化的影响，一般选用弹性模量和膨胀系数变化极小的恒弹性合金。是什么意思？

Spring weighing apparatus and instruments used, in order to meet their accuracy is not affected by temperature changes, generally used in the elastic modulus and the very small changes in the coefficient of expansion of the constant elasticity alloy.

In equity, and instruments used in the spring, in order to meet its accuracy is not affected by temperature changes, and general use elastic modulus and the constant coefficient changes very little elasticity alloy.

Spring uses which in the weighing apparatus and the measuring appliance, in order to satisfy its precision not the temperature change influence, selects the elasticity coefficient and the expansion coefficient change minimum permanent elastic alloy generally.

Scales and meters used in spring, in order to meet its accuracy is not affected by temperature changes impacts, General selection of small changes in elastic moduli and thermal expansion coefficient of alloy.