高水平的麦角钙化醇对鸡也是有毒害的.Ergocalciferol at high levels also is toxic to chickness.GB14755 -1993 食品添加剂维生素D2 ( 麦角钙化醇 )Food additive -- Vitamin D 2 ( Ergocalciferol )...
The structure, the principle of work, bauxite floatation of BF - L floatation machine were presented.本文介绍了BF -L 型浮选机的结构特点, 工作原理及铝土矿选矿的适应性研究.The seven leading bauxite exporters formed the International Bauxite Association...
He succeeded in decoying the ducks toward his blind [ hide ].他成功地把 野鸭 引诱 到他的隐藏处.Decoying technology is an effective manner to self - protection in electronic countermeasures.诱偏技术是电子对抗中 自我 保护的有效方法....