Because of differences in the expansion rates of the two metals, the thermostatic spring winds up or unwinds with changing temperature.

由于两种金属的膨胀率不同，当温度变化时，恒温制弹簧将卷绕或松开。

youdao

Youth is the eye lotus spring, third year is that this eye expansion of bubbling spring season.

青春是眼忘忧泉，高三是这眼泉水膨胀冒泡的季节。

youdao

My company mainly manages the bolt, the nut, the spring nut, the bolt, the gasket, the tooth stick, the expansion of metal screw, the heterogeneous pressing part, non-tender, hardware tool and so on.

本公司主要经营螺钉，螺母，弹簧螺母，螺栓，垫圈，牙棒，金属膨胀螺丝，异型冲压件，非标件，五金工具等。

youdao

When he's in the mood, he seems happy to hand the Administration a big win, as he did with NATO expansion last spring.

CNN: Senator No

Mr. President, please let's work together, beginning with the effort to secure Senate ratification of NATO expansion this Spring, and then with your timely transmittal of these treaties.

CENTERFORSECURITYPOLICY: United States Senate

The global expansion that began last spring in less-developed nations is building steam everywhere.

FORBES: The Golden Question