The results of determining the alkaline and alkaline earth metals in the treated gasoline showed there was no loss of metals from the catalysts.
对脱砷-加氢-脱氯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。
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。
But the fact that the excess bariums are responsible for electron emission may be reconciled with the deficiency of alkaline earth metals during life by the dynamical surface emission center model.
然而超额钡仍然是发射电子的泉源，可以通过动态表面发射中心模型而与寿命中碱土金属下降统一起来。
In this paper, chemical storage materials of hydrate of alkaline earth metals at low temperatures are rported by differential scanning calorimetry (DSC).
对碱土金属的水合氯化物作为一种低温化学蓄热材料进行了相应的DSC研究。
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；
When two different metals are placed in a fused alkali or alkaline-earth chloride bath, the more readily corrodible metal will deposit on the less corrodible one.
当两种不同的金属放在熔融的碱金属或碱土金属氯化物盐浴中时，较易腐蚀的金属会沉积在较难腐蚀的金属上。
The method 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。
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。
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。
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