查询词典 carbonate-apatite

Microbial sedimentation was widespread in the Precambrian and was also developed in stromatolitic carbonate horizons of the Phanerozoic, which constitute one type of microbial carbonates.

微生物沉积作用在前寒武纪地层中普遍发育，在显生宙的一些地层中也较为发育。

Diphenyl carbonate is an important carbonic ester, an important precursor for the synthesis of polycarbonate without using phosgene.

碳酸二苯酯是一种重要的有机碳酸酯，是非光气法合成聚碳酸酯的关键原料。

The calcium carbonate content of phosphate rock determines the pore structure.

磷矿中碳酸钙的含量决定了磷矿的毛细孔结构。

Different modifier s such as stearic acid,titanate coupling agent,sodium dodecyl benzene sulfonate and phosphorate are applied to improve the surface activity of ground calcium carbonate powder.

通过对改性效果分析，讨论各改性剂的改性特点及最佳配比，寻找碳酸钙的改性最佳工艺。

Examples are sodium carbonate and potassium acid phthalate which are used to standardize acid and base solutions.

例如碳酸钠和邻苯二酸氢钾，分别用来标定酸和碱溶液。

The catalytic performance of hydrotalcite and pillared hydrotalcite with different anions were tested in transesterification of dimethyl carbonate with phenol.

测试了水滑石和不同org-LDHs对碳酸二甲酯与苯酚酯交换反应的催化性能。

The acid water in coal pit can be well controlled by adding calcium carbonate and lime.

同时也介绍了处理酸性水的流程。阐述通过添加碳酸钙和石灰，可使酸性采煤坑水得到很好治理。

Polyatomic ions containing oxygen, such as carbonate and sulfate, are called oxyanions .

多原子含有氧离子，如碳酸盐和硫酸盐，被称为

The Scanning electron microscopy is used to study the morphological features of porcelaneous layer s on surface of freshwater cultured pearls from Zhuji, Zhejiang Province, and the calcium carbonate polymorph of porcelaneous layer s is identified by X-ray powder diffraction.

采用扫描电子显微镜对中国浙江诸暨三角帆蚌养殖珍珠表面特别是无珍珠光泽的瓷质层的微形貌进行了研究，并采用X射线粉晶衍射对瓷质层进行了物相鉴定。

Thermal decomposition reaction kinetics of potash feldspar -calcium sulphate-calcium carbonate system added to sodium sulphate and sodium chloride was studied.

研究了钾长石-硫酸钙-碳酸钙体系加入硫酸钠、氯化钠的热分解反应动力学，结果表明硫酸钠可以有效促进钾长石的热分解。

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。