试验结果表明，选用粉煤灰、低钙石与沸石复合三掺，并相应提高粉磨细度，可明显地提高大掺量粉煤灰复合水泥的强度。
Test result shows that the mixing of this three materials accompany with increasing grind fineness, the strength of compound cement with large amount of fly ash can be improved significantly.
用三种对虾钙、脱脂奶粉、活性离子钙配制的饲料及基础低钙饲料，喂养6组大鼠30天，并做3天代谢试验。
These preparations, skimmed milk powder, active ionic calcium powder and basic food (low calcium meal) were fed to 6 groups of weanling rats for 30 days, and 3 days calcium metabolism tests were done.
经试验后，认定稀土钙钡和低稀土是生产这些产品的高效长效孕育剂。
It was proved that the rear earth calcium barium and the low rear earth arc the efficacious and lasting inoculants in making those castings.
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