硅元素

With the electronic probe detection,it is discovered that the mineral elements of the Buton Rock Asphalt contains carbon,oxygen,sulfur,silicon,magnesium,aluminium,autunite,kalium and iron.

通过电子探针检测，测得了布敦岩沥青的矿物组成元素主要为碳、氧、硫、硅、镁、铝、钙、钾及铁等；微观形态结构表明布敦岩沥青中有的岩矿是多孔材料，沥青和岩矿相互包容。

The geochemical characteristics and depositional environment of Pengcuolin chert are studied based on the field investigations and analysis on major elements, trace elements and rare earth elements.

通过野外地质调查和系统的岩石化学、常量元素、微量元素以及稀土元素等研究，探讨了藏南彭错林硅质岩的地球化学特征及其沉积环境。

Machinable canasite ; glass-ceramics and metal cupper functionally gradient materials ; the powder metallurgic process ; microstructure ; mechanical property ; element contents

可加工硅碱钙石；微晶玻璃/金属铜功能梯度复合材料；粉末冶金法；微观结构；力学性能；元素含量

The former is to prepare polymolybdates coordinated' directly by organic ligands using Na2MoO4 and MoO3 precursors; The latter plays emphasis on exploiting a simple and effective routine to synthesize Keggin polytungstates in which the transition metal or Si acts as the heteratom by reaction precursor Na2WO4.We have synthesized a 4,4'-bipyridine bridging dumbbell-like polymolybdates a metatungs...

前者主要是制备有机配体键合的多金属钼酸盐；后者重点是探索出一个简易、有效的合成过渡金属或主族元素硅作杂原子的Keggin多金属钨酸盐的方法，然后通过变换过渡金属或有机配体的种类探讨对产物结构的影响，再对所得化合物的结构和组成通过物理测试手段进行表征，同时研究其在光、电、磁等方面的性质。

The mineral chemistry, trace elements and Sr-Nd isotopic geochemistry of different types of deep-seated inclusions indicate that Group Ⅰinclusions in western Shaudong could be the relicts of high degree of partial melting of the mantle-derived peridotites and then subjected to mantle metasomatism; the dunite and harzburgite in Group Ⅱ inclusions could be resulted from the metasomatism of silica-rich melts in the upper mantle; the olivine-pyroxenite and pyroxenite in Group Ⅱ and Group Ⅲ inclusions could be magmatic cumulates derived from magma underplating in the upper mantle.

不同结构类型深源岩石包体的矿物化学、元素和同位素地球化学研究表明，鲁西具有变质变形结构特征的橄榄岩类岩石包体为岩石圈地幔橄榄岩部分熔融后的残留体，其后又遭受了地幔交代作用的改造；具有变质变形结构，并叠加有矿物反应结构的纯橄岩和方辉橄榄岩类包体为古老岩石圈地幔被富硅质熔体改造的结果；具有残留岩浆结晶结构的橄榄岩、橄辉岩类岩石包体以及具有变晶结构或堆晶结构的辉石岩类包体为地幔更早期岩浆作用的在上地幔的堆积体。

Any of various compounds of silicon with a more electropositive element or radical.

由硅和另一种阳性更强的元素或基组成的化合物。

Like the grains of sand on a beach, it is made mostly of silicon , next to oxygen the most abundant element on the surface of the earth.

像海滩上的沙粒一样，它的主要成分是硅——地球表面除氧之外蕴含量最为丰富的元素。

And the effect of alloying element in zinc bath on hot dip galvanizing and silicon reactivity are analysed.

分析了锌池合金元素对热浸镀锌的影响及硅的反应性问题。

A hard malleable ductile silvery element that is resistant to corrosion used in alloys occurs in pentlandite and smaltite and garnierite and millerite .

一种硬而软的银色元素，可锻造，抗腐蚀，用于合金中，见于硫铁矿，砷钴矿，硅镁矿，针矿中。

Also,the differences between those in sandy habitat and those in non-sandy habitat are significant.2 There existed two common factors called macroelement factor and trace element factor,which indicate the contents of macroelements and trace elements in the plants respectively.

豆科与禾本科相比，豆科植物因其具固氮能力，所含大量元素水平较高，而禾本科植物因细胞壁硅质化，含微量元素稍高；沙质生境因其养分贫瘠，植物的大量与微量元素均较非沙质生境中的低；特别是本区地带性土壤-栗钙土与特异性生境沙带中的疏林沙土相比，疏林沙土上植物大量与微量元素含量较栗钙土区植物明显偏低。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。