注射

In this paper author expounded the characteristics in structure and performance of main units of rubber injection moulding machine, and introduced briefly a developments in all-electrical injection moulding machine, gas-assisted injection technique of liquid silicone rubber, cold runner technique of rubber injection mould.

本文论述了目前橡胶注射机主要装置的结构和性能特点，简要介绍了全电动橡胶注射机、气体辅助液态硅橡胶注射技术和橡胶注射模具冷流道技术的进展。

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。

Furthermore, with only a half dose of DNA in the current system, by the horizontal system under × 100 magnification both the survival rate of pronuclear embryos following microinjection and the integration frequency of exogenous DNA injected into embryos also increased.

此外，利用该系统还可在低倍镜下（×100）将DNA常规注射量减半注射，提高了原核胚注射后的成活率，其注射胚的外源基因整合率亦明显提高。