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位移球面螺母绕球面垫圈转动，同时拉杆还具有承受内压推力能力。
⑤专门用途的合金结构钢，钢号冠以（或后缀）代表该钢种用途的符号。
1、首先，在直流电机电阻两端并联一个合适的电阻，根据阻性负载，在发热后的阻值变化得到非线性的电阻特性，使场阻线与励磁特性起始段有较大的交角，得到一个与空载特性曲线明显的交点，从而让直流电机在较低电压时也会有稳定的工作点。
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智能型3051液位差压变送器可与HART手操器相互通讯，通过它进行设定，监控或与上位机组成现场监控系统。
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分节处采用螺旋接口，*长可做到10米，可分节装袋携带方便。
假如说，一套100平方米的住宅，按照每月每平米23元的数值，每个月所收租金为2300元。
薄膜在压力的作用下变形，从而改变电容器的容量，其灵敏度大致与薄膜的面积和压力成正比而与薄膜的张力和薄膜到固定电极的距离成反比。
湿度稳定，使用再捕获过程来维护。
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