通过对模具结构、模具工作过程、卸模过程的详细分析，介绍了一种解决此类塑料件注射模的设计方法。
Over detail analysis of mould structure working process and disassemble dies process an injection mould design method of solving this kind of plastic parts is introduced.
介绍了新型非织造布梳理机的结构性能组成及工作原理，并详细分析了电气工作原理及应用效果。
Construction, characteristics and work theory of new model nonwovens carding machine are introduced in the paper. Electrical work principle and application effect is analyzed in detail.
本文介绍一种便携式微差压测试仪的设计，详细分析它的系统结构以及主要模块工作原理，并对它的精度进行讨论。
This paper describes the design of a portable draft pressure tester and analyses its architecture and the working principle of its main module, and also discusses its accuracy.
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