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- Determination of alkali earth metal by microwave plasma torch atomic emission spectrometry (MPT AES) was investigated. 用微波等离子体炬原子发射光谱法（MPT－AES）测定了一些碱土金属元素。
- Alkali earth chlorosilicate of Sr8Si4O12Cl8:(Eu3+,M3+)(M=Bi3+,Gd3+)was synthesized by the high temperature solid state method and using Na2CO3 as charge compensation agent. 以Na2CO3为电荷补偿剂,采用高温固相法合成了碱土氯硅酸盐Sr8Si4O12Cl8:(Eu3+,M3+)(M=Bi3+,Gd3+)荧光材料。
- The main attention focuses on the introduction of research progress on alkali and alkali earth compounds, rare earth oxides and complex oxides as catalysts since 1989. 重点介绍1989年以来对碱及碱土金属化合物、烯土氧化物、复合氧化物等各类催化剂的研究进展。
- The luminescent propetties of RE activated tungstates are dealt with in respect to mixed alkali earth metal tungstates,fluorotungstates,isopolytungstates,heteropoly tungstates. 本文从单钨酸盐、混合二价金属钨酸盐、卤钨酸盐、同多钨酸盐、杂多钨酸盐等方面综述了掺杂稀土离子钨酸盐的发光特性研究情况。
- There-fore this method can be applied to determine trace lithium in sea water,brine and saltlake water contaning a lot of alkali mentals and alkali earth mental. 因分离效果好，所以可用于含有大量碱金属、碱土金属的海水、卤水及盐湖水中的微量理的测定。
- CEP-1 catalyst is a new type proprietary catalyst for catalytic pyrolysis process (CPP), its main active component is phosphorus and alkali earth metal contained medified pentasil structure zeolite. CEP-1催化剂是一种新型的催化热裂解工艺专用催化剂,其活性组分为含磷及碱土金属的改性五元环族沸石。
- a soft silvery metallic element of the alkali earth group; found in barite. 一种软质银色的金属元素，属碱土金属，见于重晶石中。
- Our pilotless rocket enters the track of the earth. 我们把一个无人驾驶的火箭送入了地球的轨道里。
- This kind of soil contains much alkali. 这种土壤含碱丰富。
- The attraction of the moon for the earth causes the tides. 月球对地球的吸引力造成潮汐。
- The earth is only a speck in the universe. 地球在宇宙中只不过是一个小点罢了。
- a soft silvery metallic element of the alkali earth group; found in barite 一种软质银色的金属元素，属碱土金属，见于重晶石中
- How on earth do they manage to rob the bank? 他们到底怎么抢了银行的？
- A number of satellites are now circling the earth. 一些人造卫星现在正环绕地球飞行。
- The machine cast up a big heap of earth. 机器卷起了一大堆泥土。
- The red sun lights up the sky and the earth. 红太阳照亮了天空和大地。
- Who on earth is that female he's with? 跟他在一起的那个女人究竟是谁?
- Antarctica is the loneliest place on earth. 南极是地球上最偏远的地区。
- He dived his hand into the earth. 他将手插入泥土中。
- QSPR Research on Physicochemical Properties of Alkali Earth Metal Halides 碱土金属卤化物理化性质QSPR的研究
