diameter of part的意思|示意

The changing of the diameter of part a in mechanical products due to the influences of environment and age, and it would finally result in the uselessness of part a.

某机械产品中a零件受年龄及环境因素影响，直径发生变化，最终无法继续使用。

The height is 330 m, diameter of the lower part – more than 30 m.

烟囱高度达330米，底部的直径大于30米。

This image shows part of a 7.4-mile-diameter impact crater on Mars' southern hemisphere.

这张照片展示了位于火星南半球一个直径11公里冲击陨坑的一部分。