钙质

• People who don ' t drink enough milk are deficient in calcium
  （牛奶喝不够的人通常会缺乏钙质。 ）
• Research on bearing behaviour of pile in calcareous soil of coral reef
  珊瑚礁钙质土中桩基工程承载性状研究
• Surface active agents . preparation of water with known calcium hardness
  表面活性剂.已知钙质硬度的水的制备
• The boilers will have to be scoured out to remove the calcium deposits
  锅炉内壁要洗刷一下，除去钙质沉淀物。
• The geotechnical characters of calcareous soils and the pile foundation engineering
  钙质土工程特性及其桩基工程
• Dairy products are rich in calcium and can help build stronger bones
  D .奶品类：奶类含丰富钙质，有助骨骼健康。
• Coral has been classed with precious gems for more than twenty centuries
  珊瑚分为钙质型珊瑚和角质型珊瑚两种。
• Lack of calcium and vitamin d
  缺乏钙质和维他命d
• Two of the best alternative sources of calcium are tofu and soy milk
  其中，另外两种最佳的钙质来源是豆腐和豆浆。
• Double - reverse flotation process of phosphate rock that contains silica and calcia
  某硅钙质磷块岩双反浮选工艺研究