The injection molding process of thermoset plastics bulk molding composition (BMC) made of automobile lamp reflector is presented in the paper. Process parameters are settled such as barrel temperature, screw speed, injection pressure, injection velocity and holding time and so on.
介绍了热固性团状模塑料（BMC）注射成型汽车前照灯反射镜的工艺过程，确定了BMC注射成型的料筒温度、螺杆转速、注射压力、注射速度和保压时间等工艺参数。
The calculation of the volume efficiency of rod pumps includes the calculation of four parameters, i. e. the plunger stroke loss factor, pump barrel fill coefficient, leakage coefficient and bulk effect coefficient of produced liquid.
有杆抽油系统中抽油泵容积效率的计算一般由柱塞行程损失系数、泵筒的充满系数、漏失系数和抽汲液体的体积效应系数等4部分构成。
Will you supply main engine lube oil in bulk or in barrel?
你供的主机滑油是散装，还是桶装。
Bag-packed cement containers with capacity 2-20 t, and cement in bulk barrel containers with capacity 50-450 t for customers to choose.
有2～20t袋装水泥仓和50～450t散装水泥筒仓供选购。