ประโยคภาษาจีน : 中文句子 |
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zhè zhǒng 这种 fāng fǎ 方法 jīng cháng 经常 yán 沿 zuò yè miàn 作业面 lái huí 来回 tuō yè 拖曳 gāng 钢 lí 犁 huò 或 gǔn tǒng 滚筒 zuò yè 作业 kuān dù 宽度 tōng cháng 通常 dá 达 shǔ 数 bǎi chǐ 百尺 yuē 约 mǐ 米 |
The method often uses a steel plow, or rotation drum, which is pulled mechanically back and forth across a face of coal that is usually several hundred feet long. |