求翻译：双金属片是利用双金属片在温度改变时产生变形的元件。通常由两层热膨胀系数不同的合金叠合而成。其中，膨胀系数较大的称为主动层；膨胀系数较小的称为被动层。主动层的材料主要有锰镍铜合金、镍铬铁合金、镍锰铁合金和镍等等；被动层的材料主要是镍铁合金，镍含量为34～50%。是什么意思？

The bimetallic strip is the use of the components of the bimetallic strip in the deformation temperature change. Usually by two layers of thermal expansion coefficient of the alloy composite made. Among them, the larger coefficient of expansion is called the active layer; smaller coefficient of expa

Dual-metal is taking advantage of the dual-metal temperature change in deformation when the element. Usually by two layers of different thermal expansion coefficient alloy stack. One of the larger coefficient, known as active layer; expansion coefficient is small, known as passive layer. Active Laye

The bimetal piece is uses the bimetal piece when the temperature change produces the distortion part.Usually folds by two thermal-expansion coefficient different alloy gathers becomes.Among them, the expansion coefficient big is called the driving level; The expansion coefficient small is called the

Two pieces of metal are using two pieces of metal deformation of components when the temperature changes. Usually consists of two layers of different coefficients of thermal expansion alloy laminated together. One, called the active layer of the expansion coefficient larger; expansion coefficient sm

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