calcium bentonite 钙系膨土...activating bentonite 活性膨土...bentonite 膨润土皂粘土,皂土...western bentonite 美国西部膨土...bentonite-thickened grease 膨润土润滑脂...Southern bentonite 美国南部膨土...bentonite grease 膨润土润滑脂;皂土润滑油...
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