羟基酸盐电离出的金属阳离子能抑制泥页岩 的水化膨胀和水化分散；
Metal cations ionized by the hydroxy-acid salt can inhibit the hydration expansion and hydration dispersion of the clay shale;
用该共聚物配制的防塌泥浆抑制页岩水化膨胀和水化分散的能力，随共聚物中丙烯腈含量增加而增强。
The ability of the copolymer to prevent shale hydration swelling and dispersion(cave-in) enhances as the acrylonitrile content in it increases.
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