common iron meaning in Chinese
普通钢材
普通捻缝凿
Examples
- Chapter 15 micronutrients and micronutrient fertilizers . boron , copper , mo , mn and their physiological roles and deficiency symptoms . their forms and their availability in soil . common iron fertilizers and effective usage
第十五章微量元素肥料主要讲授微量元素硼、铜、钼和锰等的生理功能和营养作用，缺素症状；土壤中4种微量营养元素的形态、转化及其有效性；微肥的合理施用。