求翻译：场地覆盖层厚度超过16.50米，粘土层的剪切波速250≥Vs>140，为中软土，粉质粘土层的剪切波速500≥Vs>250，为中硬土，全风化泥岩和砂岩及强风化泥岩剪切波速均500≥Vs>250，均为软岩。建筑场地类别为II类。场地为建筑抗震有利地段是什么意思？

Site covering layer thickness over 16.50 m, the shear wave velocity of the clay layer 250 ≥ vs> 140, of soft clay, silty clay layer shear wave velocity of 500 ≥ vs> 250 for the hard soil, all-weathered mudstone and sandstone and strongly weathered mudstone shear wave velocity 500 ≥ vs.> 250

Site Overlay thickness greater than 16.50 M, clay layer of the shear wave speed 250 ≥ Vs >140, in the soft soil, toner quality clay layer 500 of the shear wave speed ≥ Vs >250, in the soil, rock and mud around the weathered sandstone and strong winds, rock cut mud wave speed is ≥ 500 Vs >25

Location overburden layer thickness surpasses 16.50 meters, the clay layer cutting wave velocity 250≥Vs>140, for the soft soil, the silty clay level cutting wave velocity 500≥Vs>250, for the hard soil, the entire decency mudstone and the sandstone and the strong decency mudstone cutting wave v

Ground cover thickness more than 16.5 metres, the clay layer shear wave velocity of 250 ≥ Vs>140, soft, silty clay layer shear wave velocity of 500 min Vs>250, to hard soil, weathered mudstone and sandstone and strong weathering of mudstone 500 ≥ Vs>250 shear wave velocity, to soft rock. Co

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