本文（第 1 部分）介绍了 Webzine 这个简单 PHP应用程序的第一部分，并详细分析了几小段代码示例。

Part 1 of this article presents the first part of a simple PHP Webzine application. I've covered a few small code examples in detail.

youdao

针对工程实践中常见的桥梁问题，建立了其在自由振动下的模型，分析了其前几阶振动模态下的振形和动态应变分布。

Aimed at popular bridge in the engineering, we build a piezoelectric bridge vibration model and analyze the vibration shape and distribution of the dynamic strain.

youdao

本文以H - 800型透射电子显微镜为例，介绍了几例故障现象、故障分析及故障排除方法。

Taking H-800 electron microscope for example, this article introduces some faults appearance, faults analysis and method of faults exclusion.

youdao