使用电脑的离线式多路电话计费软件。一个计费板插在电脑的PCI扩展槽上，多路电话线接入，实施计费。-use computers offline multi-way telephone billing software. Billing a plate inserted in a computer PCI expansion slot, multi-line access, billing implementation.

电机定子槽源码，介绍电子槽的一些源码，可以直接下载使用-Stator slot source to introduce electronic slot source can be downloaded directly

根据陈燕生《液体动静压轴承》编写的有回油槽径向静压轴承的程序，可显示承载能力、压强、刚度及温升等图谱-According to Chen Yansheng " liquid hybrid bearing," have written back to the tank radial hydrostatic bearing program, you can display the carrying capacity, pressure, stiffness and temperat