查询词典 carbonate-apatite

A preferred form of the invention is a process comprising adding to a quantity of sodium which is covered with a hydrocarbon solvent boiling above 100°C., at least a chemically equivalent proportion of methyl, ethyl or a propyl alcohol, subsequently adding an approximately equivalent proportion of a dialkyl carbonate and of an alkyl phenylacetate, the alkyl groups in these two last-mentioned compounds being preferably the same as the alkyl radical of the above-mentioned lower aliphatic alcohol, heating the mixture to induce reaction and continually distilling out the alcohol formed from the reaction zone.

本发明的理想形式包括下面的工艺过程：把至少处于化学平衡的甲醇，乙醇或丙醇添加到覆盖着沸点超过一百摄氏度的碳氢化合物溶剂中，接着加入大约相同当量的二烷基碳酸酯和烷基乙酸苯酯，在刚才提到的化合物中，其烷基集团最好是和刚才提到的低级别脂肪族醇相同，然后加热反应混合物从而引导反应的进行，在反应区域通过连续蒸馏移除形成的醇类。

With X ray photoelectron spectroscopy technique, surface chemistry and adsorption mechanism of iron oxide minerals from the laterite developed on carbonate rock have been studied.

氧化铁矿物表面的XPS分析表明，矿物表面和整体之间在化学成分、状态和结构等方面存在明显差异，矿物表面的这种非均匀性特征是其表面化学反应的重要动力学起因。

In this research we investigate the effects of steam reforming catalyst (RKNR+RKS-1, Haldor Topsoe) and potassium carbonate catalyst on the gasification of lauan sawdust in a fluidized bed reactor.

本研究旨在探讨蒸气重组触媒(RKNR+RKS-1， Haldor Topsoe)及碳酸钾触媒对木屑在流体化床中气化反应的影响。

Heritage include: geological sites, glorious carbonate洞顶and ground, the pure black lava wall and regarded as the most perfect lava cave system; sunrise peak posed by the tuff cone-shaped mountain, as tall as the fortress seaside, stunning scenery; peak Korea - Han Mt to waterfalls, rocks and different form of crater lakes and famous.

遗产包括：地质遗址，绚丽多彩的碳酸盐洞顶和地面，纯黑色的熔岩洞壁，被视为最完美的熔岩洞窟体系；日出峰，由凝灰岩构成的锥形山峰，如堡垒般矗立在海边，景色令人叹为观止；韩国最高峰——汉拿山，以瀑布、形态各异的岩石和火山口湖泊而闻名。

Emulsifying calcium carbonate, lead, arsenic gong 0.5 PPM 880 yuan/ton, 5 tons, 8,000 yuan/ton.

乳化碳酸钙，铅砷贡小于0.5ppm，8800元/吨；5吨以上，8000元/吨。

The Ultrafine powder of lead carbonate crystallites was Synthesized by chemical precipitation method.

运用 TEM对合成的碳酸铅形态及颗粒尺寸大小进行表征。

The influences of reaction temperature, reaction time and the ratio of reactants on the formation of lead carbonate crystallites were investigate.

通过实验确定了解制备碳酸铅的最佳工艺条件：反应温度为 95℃，反应时间为 5 h，反应物浓度为0 。5 mol/l，反应物配比为 1∶ 6。

Study on the synthesis of ultrafine powder of lead carbonate.

采用均匀沉淀法合成碳酸铅，研究反应温度、时间、反应物浓度、反应物配比对碳酸铅收率的影响。

The result shows basic lead carbonate is the main component of the glaze.

本研究发现，碱式碳酸铅

MDF composites exposed to saturated carbonate solutions also lead to improved moisture resistance.

把MDF复合材料浸于碳酸盐饱和溶液进行处理，也可以达到改进抗湿性目的。

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。