目前，采用泵送法预制高强度混凝土井壁，在国内尚无成功的先例。
Currently, the method of prefabricating concrete high strength wall by pump transporting is still without successful precedent in our country.
目前，采用泵送法预制高强度混凝土井壁，在国内尚无成功的先例。
Currently, the method of prefabricating concrete high strength wall by pump transporting is still without successful precedent in our country.
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