查询词典 carbonate-apatite

A new technology process of sodium diacetate production with glacial acetic acid and sodium carbonate in one reactor.

研究了以冰醋酸和碳酸钠一步合成双乙酸钠的工艺和反应设备，使双乙酸钠生产工艺更为简单合理，经济易行，而且产率达 97%以

A new method for preparing sodium diacetate by one step reaction based on acetic acid and sodium carbonate was studied.

介绍了以醋酸和纯碱为原料，不加任何溶剂，采用一步法合成新型防腐剂双乙酸钠的新工艺，确定了最佳工艺条件：n：n为(4.0～4.2)：1；反应温度60～70℃；反应时间120～180min；醋酸加料时间40～60min，所得产品质量合格，收率可达96％以上。

Another method studying the diagenetic cementation seal mechanism of fault was established by using whether deposition of silica and carbonate or not.

利用断层压力和泥岩塑性变形极限之间的关系建立了断层紧闭愈合封闭机理的研究方法；利用SiO2和CaCO3的是否沉淀建立了断层成岩胶结封闭机理的研究方法。

The meteoric diagenetic environment also have great influence on the porosity of carbonate rock.

在烃源岩热演化过程中有机酸的释放对地层水成岩环境孔隙影响较大；大气淡水成岩环境对孔隙改造也较明显。

The results of this research will include setting up the diagnostic criterions, classification system and its matched diagenetic model of carbonate exposed unconformity and relative sea-level fluctuation.

该项目的实施有助于了解早古生代华北板块的构造-沉积演化，并为相关油气资源的勘探和开发提供重要科学依据。

This is attributed to the infuence of the difference in carbonate mineralogy in different sedimentary environments on the Sr distribution and also to the diagenetic environment which depends upon the sedimentary environment.

究其原因，一方面因不同沉积环境中碳酸盐矿物组分不同，影响了锶的分布；另一方面与沉积环境所决定的成岩环境有关。

It is to be understood that when in this Specification we speak of a dialkyl carbonate and similarly of a dialkyl phenylmalnate, that term does not imply that the two alkyl groups are necessarily the same.

有一点要理解：在说明中我们提到二烷基碳酸酯，相似的我们还提到了二烷基苯基丙二酸酯，这两个术语并不是暗示这两个烷基官能团必须是一样的。

The synthetic methods of dialkyl carbonate , through ester exchange, oxidative carbonylation, decarbonylation , synthesis with carbon dioxide , have been reviewed in this article.

简述了近年来碳酸二酯合成方法的研究进展，介绍了酯交换法、氧化羰化法、脱羰基法和二氧化碳直接合成法等，并着重介绍了碳酸二甲酯、碳酸二乙酯、碳酸二苯酯合成工艺中催化剂的研究与开发情

Keywords dialkyl carbonate;Ti6Al4V-steel pair;friction and wear behavior

碳酸酯； Ti6Al4V/钢摩擦副；摩擦磨损性能

The powder of cement was composed of calcium carbonate, tricalcium phosphate and calcium phosphate dibasic.

再以磷酸氢二钠和磷酸二氢钠合成浓度为0.2 mol/L的磷酸钠缓冲液，作为固化液。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。