At the same time, we have improved design on the choice of materials and ratio of grouting in order to achieve the intended purpose of seepage-proofing.
同时对注浆材料的选择和配比进行一定的改进设计，以达到预期的防渗目的。
At the same time, we have improved design on the choice of materials and ratio of grouting in order to achieve the intended purpose of seepage-proofing.
同时对注浆材料的选择和配比进行一定的改进设计，以达到预期的防渗目的。
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