在15世纪早期，人们发明了螺旋弹簧或均力圆锥轮，尽管它的主弹簧的张力不断变化，但仍能对计时装置的齿轮保持恒定的力。
In the early 1400s came the invention of the coiled spring or fusee which maintained constant force to the gear wheels of the timekeeper despite the changing tension of its mainspring.
使用弹簧夹，固定安装的主销和轴一起。保证，他们都面向如下所示绘制。
Using a spring clamp, fasten the kingpin and axle mount together. Insure that they are oriented as shown in the drawing below.
简要介绍了板簧变形运动学分析在设计中的应用，推演了理想多片钢板弹簧跳动时主片中心位置的详细计算方法；
This paper introduces the application of leaf spring kinematics chiefly, and derives the computing method of main leaf center when ideal multi-sheets leaf spring bounces.
主阀主要由阀座、主阀盘、活塞、弹簧等零件组成。
Mainly by the main valve seat, the main valve plate, piston, springs and other parts.
该装置将试样通过上、下夹头安装在主承力框架内，利用弹簧对试样施加轴向载荷，使试样承受恒定的拉伸应力。
The specimen was put in framework by top and bottom fixture and constant tensile load was applied by spring.
斜置式对称分布的主振弹簧，使得振动筛在运行时平和稳定，隔振效果极好。
The tilting symmetric distributed main-vibrating spring makes the vibrating screen smooth during operation and vibration isolation effect is very good.
现我公司主导产品为中重型卡车配套生产转向节主销、钢板弹簧销系列及钢板弹簧吊环系列。现有三大系列百余种产品，在一汽集团内市场占有率达到100%。
Our main products include redirector dowel, armor plate spring dowel, armor plate spring stationary rings series. there about hundred products of three series which occupancy 100% at FAW market.
本实用新型是一种瓶口启封装置，它由带偏心脚的启子，主、副转子，弹簧等组成。
The utility model discloses a sealing and unsealing device for a bottle mouth, comprising an opener with eccentric feet, primary and secondary rotors, a spring, etc.
使用弹簧夹，固定安装的主销和轴一起。
Using a spring clamp, fasten the kingpin and axle mount together.
主用于高精密弹簧、电池弹簧，电子弹簧，天线弹簧，电子五金、电镀挂具、仪器仪表、电器钟表等各种精密零件。
The main for the high precision spring, battery spring, electronic spring, Antenna spring, electronic hardware, electroplating, instrument Table, electronic watches and other precision parts.
主用于高精密弹簧、电池弹簧，电子弹簧，天线弹簧，电子五金、仪器仪表、电器钟表等各种精密零件。
The main for the high precision spring, battery spring, electronic spring, Antenna spring, electronic hardware, electroplating, instrument Table, electronic watches and other precision parts.
主用于高精密弹簧、电池弹簧，电子弹簧，天线弹簧，电子五金、电镀挂具、仪器仪表、电器钟表等各种精密零件。
The main for the high precision spring, battery spring, electronic spring, Antenna spring, electronic hardware, instrument and meter, electric clock Watch a variety of precision parts.
主用于高精密弹簧、电池弹簧，电子弹簧，天线弹簧，电子五金、仪器仪表、电器钟表等各种精密零件。
The main for the high precision spring, battery spring, electronic spring, Antenna spring, electronic hardware, instrument and meter, electric clock Watch a variety of precision parts.
主伞的顶部开有“天窗”，“天窗”的上端罩有副伞，副伞的上端压有弹簧。
The main umbrella has trap door on the top, the secondary umbrella covers the trap door, and the spring presses the secondary umbrella.
主伞的顶部开有“天窗”，“天窗”的上端罩有副伞，副伞的上端压有弹簧。
The main umbrella has trap door on the top, the secondary umbrella covers the trap door, and the spring presses the secondary umbrella.
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