据我所知，拉力机价格应该是和传感器、电机及丝杆有很大关系的，这三个部件是拉力试验机的核心部件。
As far as I know, the price of tension machine should be closely related to sensors, motors and screw rods. These three parts are the core components of tension testing machine.
传感器一般有国产的和进口的，进口的质量好点，当然价格也会高些;电机也就相当于平时讲的马达，日本松下伺服电机是业内口碑比较好的;丝杆，也是分普通丝杆和滚珠无间隙丝杆，后者也是质量有保障些。
Sensors are generally home-made and imported, the quality of imports is better, of course, the price will be higher; motor is equivalent to the usual motor, Japan Panasonic servo motor is a better reputation in the industry; screw, but also divided into ordinary screw and ball clearance-free screw, the latter is also more guaranteed quality.