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碱土金属
1、alkaline metals───碱金属
2、alkaline───adj.碱性的；含碱的
3、earth───vt.把（电线）[电]接地；盖（土）；追赶入洞穴；n.地球；地表，陆地；土地，土壤；尘事，俗事；兽穴；vi.躲进地洞
4、alkaline battery───[电]碱性电池
5、alkaline foods───碱性食品
6、coinage metals───钱币金属
7、alkaline water───碱性水；碱水
8、metals───五金
9、alkaline earth metals───[机] 碱土金属
1、The results of determining the alkaline and alkaline earth metals in the treated gasoline showed there was no loss of metals from the catalysts.───汽油中碱金属和碱土金属的测定结果表明，不存在催化剂的金属流失问题。
2、of the invention is applicable to the smelting of alkaline-earth metals as well as production, such as alloy smelting, casting, pressure casting, extrusion, etc.───本发明适用于碱土金属的冶炼及其合金冶炼、铸造、压铸、挤压等生产。
3、those of the alkaline earth metals (calcium, barium, and strontium), also soluble strong bases, are less stable.───碱土金属（钙、钡和锶）的氢氧化物也是可溶性的强碱，但稳定性较差。
4、Beryllium: Chemical element, lightest of the alkaline earth metals, chemical symbol Be, atomic number 4.───铍：碱土金属中最轻的化学元素，化学符号Be，原子序数为4。
5、The practice shows that the control and refinement are selected to produce pure alkaline-earth metals compound alloys.───指出杂质的控制与精炼是生产纯净碱土复合铁合金的必然选择。
6、(h)Optical elements, for example, of the halides of the alkali or alkaline-earth metals (heading 90. 01).───光学元件，例如，用碱金属或碱土金属卤化物制成的（品目90。
7、Strontium Chemical element, one of the alkaline earth metals, chemical symbol Sr , atomic number 38.───化学元素，碱土金属之一，化学符号sr，原子序数38。
8、More broadly, ammonium hydroxide (see ammonia) and soluble hydroxides of the alkaline earth metals are also called alkalies.───更广义的范围包括碱土金属。碱是强碱性的，会使红石蕊试纸变蓝色；
9、All alkaline earth elements have an oxidation number of +2, making them very reactive. Because of their reactivity, the alkaline metals are not found free in nature.───所有的碱土金属元素的化合价都是+2，这使他们非常活泼，因为他们非常活泼，也不在自然界中直接出现。