Heavy Calcium Carbonate 重质碳酸钙 ; 碳酸钙
heavy manganese carbonate 重质碳酸锰
Heavy Magnesium Carbonate 重质碳酸镁
fine heavy calcium carbonate 重质微细碳酸钙
modified heavy calcium carbonate 改性重质碳酸钙
They would leave subtle clues in the isotopic composition of the limestone by shifting the ratios of light to heavy carbon and oxygen atoms in its calcium carbonate.
因为如果是那样的话，阳光将会被转换成大量的碳、氧原子保存到石灰岩中的碳酸钙里，而事实却是，岩层的同位素组成（Isotopic composition）中没有留下任何蛛丝马迹。
The common calcium carbonate filling masterbatch has more calcium carbonate separated out, more dust and heavy environment pollution.
普通碳酸钙填充母料碳酸钙析出多、粉尘大、环境污染较重。
The results show that this method is suited to character activated light calcium carbonate and activated heavy calcium carbonate which particle is very fine.
结果表明，该方法适于表征活性轻质碳酸钙和颗粒极细的活性重质碳酸钙。
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