ประโยคภาษาจีน : 中文句子 |
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jiè shào 介绍 le 了 chuán tǒng 传统 de 的 bì léi zhēn 避雷针 diàn zhù 电铸 zǐ tóng 紫铜 shēng chǎn 生产 gōng yì 工艺 bìng 并 zhǐ chū 指出 le 了 qí 其 quē diǎn 缺点 |
The conventional red copper electroforming process for the production of lightning rod was introduced and its disadvantages were pointed out. |