查询词典 alkaline

Therefore, the content of an alkaline metal such as sodium and potassium that can be incorporated as an impurity into the metallic nickel powders can be significantly reduced.

因此，可以显著降低作为杂质引入金属镍粉中的碱金属如钠和钾的含量。

The results show that when alkaline earth metal oxides are used as the medium, the products are hexacoordinate silicon complexes, and that under the optimum synthetic conditions, the conversion yields of barium salt and calcium salt are greater than 90% and 60% respectively.

结果表明：以碱土金属氧化物为介质时，合成产物为六配位体有机硅化合物；在最佳合成条件下，钡盐的转化率达90%以上，钙盐的转化率在60%以上。

In the second chapter, twelve compounds constructed by arenedisulfonates and metal ions such as alkali, alkaline earth and transition metal ions have been synthesized and structurally characterized.

第二章描述了在水溶液条件下芳烃二磺酸根离子与碱金属离子、碱土金属离子和过渡金属离子形成的十二个化合物的结构。

It was found that aluminum exhibits minimum EDAX analysis showed that alkaline earth metal ions and EDTA have no contribution to the formation of the surface film on aluminum.

实验结果表明铝在含0.02 mol·L-1 EDTA和饱和Ca2、Sr2的溶液中具有最小的腐蚀速率。

Na and Li belong to alkaline earth metal, but their effects on the electrical properties of WO〓 ceramic are different.

Na〓WO〓和Na〓CO〓的掺杂作用与Li的作刚很不相同，尽管二者同属第一主族。

The dynamical process of spectral hole burning of Sm〓 doped in alkaline earth metal fluorine halide mixed crystals was studied.

对Sm〓掺杂碱土金属氟卤化物的光谱烧孔的动力学过程进行了讨论。

Atomic spectrum of ''.'alkaline'.'' metal

碱化的变成碱的；弱碱性的

Different alkaline earth metal ions, such as Ca(superscript 2+), Mg(superscript 2+) and Zn(subscript 2+), were introduced and their influences on the working characteristics, crystalline behavior as well as the electrical properties were studied.

通过引入Ca(上标 2+)，Mg(上标 2+)，Zn(上标 2+)等不同的二价金属离子，重点讨论了它们对玻璃的特征温度、分相析晶行为以及膨胀系数、电学性质的影响。

The mechanism of thermal decomposition for alkaline earth metal benzoate s was studied by using TG,DTA,IR and gas chromatography_mass spectrometer.

用DTA和TG研究了碱土金属苯甲酸盐在氮气气氛中的热分解过程，并用红外光谱、色-质联用表征了热分解产物。

The complexation properties of them with alkali and alkaline earth metal ions have been investigated by means of visible spectra in solns.

方法简便，产率较高，借助于可见光谱测定，考查了它们在溶液中与碱金属和碱士金属盐等的配位性能。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。