查询词典 ethylenediamine

Methods: After the sample being digested, because of ethylenediamine-hydrochloric acid, aluminium, chrome azurol S, the polyethylene glycol octyl phenyl ether together with hexadecylpyridine bromide form a steady blue quaternion system, whose absorbance and aluminium content is direct ratio within some consistence range.

样品经消化后，在乙二胺－盐酸缓冲介质存在下，铝与铬天青S和聚乙二醇辛基苯醚及溴代十六烷基吡啶形成稳定蓝色四元体系，在一定浓度范围内，其吸光度与铝含量成正比。

The connection between the bottom support board and the pillar should reserve the foot bolt hole, the hole sizeshould be bigger than or be equal to three times of the diameter of the feet bolt, the depth slightly is bigger than the foot bolt length. Pouring into the epoxy resin mortar into the hole, its mixture ratio is the epoxy resin (6,101), DBP17, ethylenediamine 8, and granulated substance

下支座板与墩台的连接则应预留地脚螺栓孔，孔的尺寸应大于或等于三倍地脚螺栓的直径，深度稍大于地脚螺栓的长度，孔中灌注环氧树脂砂浆，其配合比为环氧树脂（6101），二丁脂17，乙二胺8，砂250。

The CNx nanotubes films were fabricated by pyrolyzing ethylenediamine on Ni substrates at 860℃.

以乙二胺为前驱液，采用高温热解法，860℃下在镍基底表面生长CNx纳米管薄膜。

The compositon and structure of two complexes differed from the complex ZnS (en 〓 synthesized in ethylenediamine. The precursors were pyrolysed in nitrogen stream at 400℃.

实验结果表明这种配合物结构、组成都不同于在纯乙二胺溶液中得到的中间体配合物。

The intensive discussion, about the competitive reactions in the y-irradiation process of the stock solution, and experimental results indicate the stability constants of the metal chelates with ethylenediamine, the solubility product constants of the metal sulfides, and the standard electrode potentials of the metal ions directly control the formation of metal sulfides.

深入讨论了金属盐和硫粉在γ—射线辐照乙二胺溶液形成的还原气氛中存在的多种竞争反应，以及金属离子和乙二胺的配位常数、金属硫化物的溶度积常数和金属单质的标准电极电势对制备纳米硫化物的影响。

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。