戴着
The calculation method of drainage modulus in agricultural diked area is inapplicable in urban diked area.
农业圩区原有的排涝模数计算方法已不适用于城镇圩区.
The gypsum slurry is pumped into a diked area.
我们用泵将石膏料浆打到一块用堤围起来的空地中.
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