[underground] mine field size
[underground] mine field size
[煤炭科技英汉词典]
[underground] mine field size井田尺寸
井田范围内煤层的走向长度、倾斜长度、倾斜方向的水平宽度及井田面积。
是什么意思,[underground] mine field size的解释,[underground] mine field size的翻译
[underground] mine field size
[煤炭科技英汉词典]
[underground] mine field size是什么意思,[underground] mine field size的解释,[underground] mine field size的翻译