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- The Experimental results show that gravity segregation of Pb Sn Sb ternary alloys can be obviously improved and grains structurecan be refined by RMF. 实验结果表明:旋转磁场不仅能显著改善合金的比重偏析,还能细化晶粒,提高性能,是很有发展潜力的铸造新工艺。
- The Technology and Equiment of Hot Dip Plating Pb Sn Alloy on a Double Wall Brazed Tube 双层卷焊钢管热浸镀铅锡合金工艺与设备
- He put it where it is concealed from view. 他把它放到看不见的地方。
- Machine guns opened up from a concealed position. 机关枪从隐蔽的阵地开始射击。
- He concealed himself behind the tree. 他藏在树后。
- You should not conceal yourself from your teacher. 你不应该躲避你的老师。
- She concealed her disappointment from her mother. 她对母亲隐瞒了自己的失望。
- He concealed his key under the doormat. 他将钥匙藏在门前擦鞋垫下。
- He concealed his real motives from me. 他对我隐瞒了他的真实动机。
- A sudden attack made from a concealed position. 伏击从隐蔽地点进行的突然袭击
- She tried to conceal what she had done to them. 她试图隐瞒对他们所做的事。
- Data whose meaning is concealed from unauthorized users. 对于非授权用户其意义是隐蔽的数据。
- Not carrying concealed weapons or drugs. 没有携带隐藏起来的武器或毒品的
- A method for determination of Al,Ag,Bi,Cu,Cd,Co,Fe,Ni,Pb,Mg,Sn,Se,Zn in tellurium ingot by ICP AES were studied. 本文介绍了采用电感耦合等离子体发射光谱法（ICP－AES）测定碲锭中Al、Ag、Bi、Cu、Cd 等13 个杂质元素的方法。
- The state of being concealed; secrecy. 保密隐藏的状况; 隐匿
- A method for the determination of Pb, Sn and Mo in 245 friction material by AAS has been developed. 本文采用原子吸收光谱法(AAS)测定245摩擦材料中的Pb、Sn、Mo。
- An outward show of confidence concealed his nervousness. 他表现出很有信心的样子以掩盖内心的紧张。
- Many stratiform and stratabound Cu, Pb, Zn, Fe, Au, Ag, Sn, S mineral deposits arefound in South China. 在华南地区,发育着大量层状和层控铜、铅、锌、铁、金、银、锡、硫等矿产资源,20世纪70年代以前,一般都认为这些矿床是热液或矽卡岩成因。
- He tried to conceal his mistake so as not to lose face. 他知道他错了，但怕丢面子而不敢承认。
- The electroless Sn Pb alloy plating process in methylsulfonic acid system was studied. 研究了甲基磺酸体系化学镀锡铅合金。
