工字钢横梁底面平行于巷道底板，水平度不大于3‰，高度偏差不大于10mm

工字钢横梁底面平行于巷道底板，水平度不大于3‰，高度偏差不大于10mm；

Kết quả (Anh) 1:

End of I-steel beam parallel to the tunnel floor, level not greater than 3, height deviation of not more than 10MM;

Kết quả (Anh) 2:

Beam parallel to the roadway floor underside of the crossbar, the level of not more than 3 ‰, the height deviation is less than 10mm;

Kết quả (Anh) 3:

The bottom surface of I-steel beam parallel to the floor of the roadway, the level of degree greater than 3 per thousand, the height deviation is less than 10mm
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