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- lead method of age determination 铅法地质年龄测定
- Reverse osmosis(RO) is a main process in the seawater desalination,and the recovery technology of RO desalination system is the leading method in reducing the cost. 反渗透法是海水淡化的主要方法之一,能量回收是降低其淡化成本的主要手段。
- A complex brownish - black mineral,UO2,forming the chief ore of uranium and containing variable amounts of radium,lead,thorium,and other elements. 沥青铀矿黑褐色的合成矿,UO2,主矿为铀,还包括不定数量的镭、铅、钍和其他元素
- A simple, quick, and sensitive method to determine the radioactive nuclides of uranium and thorium in talc is described. 介绍了一种测定滑石粉中放射性核素铀钍的简便、快速且灵敏的方法。
- A complex brownish-black mineral, UO2, forming the chief ore of uranium and containing variable amounts of radium, lead, thorium, and other elements. 沥青铀矿黑褐色的合成矿,UO2,主矿为铀,还包括不定数量的镭、铅、钍和其他元素
- uranium lead method 铀 铅法,铀铅法
- Radium and uranium are radioactive elements. 镭和铀是放射性元素。
- Repairing the Sliding Bearing of Motor by Casting Lead Method 浇铅法修复电动机的滑动轴承
- The horse forged ahead the lead in the homestretch. 那匹马在最后阶段突然加速跑到前面。
- uranium thorium ore 铀钍矿石
- Shirley will try out for the lead in the play. 雪莉将参加该剧主角的选拔演出。
- Excessive patriotism can lead to xenophobia. 爱国主义过了头即可导致仇视一切外国人。
- Followed by the slow decomposition of uranium to another element thorium. 铀元素随后缓慢分解为另一种元素钍。
- Lead aprons shield people from radiation. 铅做的工作裙可使人免进辐射。
- Graphite is used in making lead pencils. 石墨常被用来做成铅笔。
- Lead will fuse at quite a low temperature. 铅会在相当低的温度下熔化。
- The team recovered its lead in the second half. 该队在下半场重新领先。
- No road of flowers lead to glory. 没有一条通往光荣的道路是铺满鲜花的。
- Copper has less resistance than lead. 铜的电阻比铅的小。
- I'll take part, but I won't want to lead. 我参加,但不想当领导。