查询词典 lunar caustic

During the New Moon (the 1st of a lunar month) and the Full Moon (the 15th of a lunar month) when the Earth, Moon, and Sun lie in a straight line, the solar and the lunar tides overlap and the sea-level pressure is lower than the mean at the Airport, because the tide-producing force induced by the Sun and Moon reaches maximum. On the other hand, during the First Quarter (the 7th day of a lunar month) and the Last Quarter (the 21st of a lunar month) the Sun-Earth's and the Moon-Earth's relative positions are perpendicular to each other with respect to Earth, the solar and the lunar tides interfere mutually, the Airport sea-level pressure is greater than the annual mean due to the tide-producing force reaching minimum.

松山机场在朔望月里，每逢阴历朔日或望日，受太阳与月球之引潮力(Tide-producing force)方向一致，太阳潮和太阴潮重叠影响，其全日和逐时平均海平面气压比年平均为低；而每逢上弦和下弦时，日地与月地的相对位置成直角，太阴潮和太阳潮相干扰，其全日和逐时平均海平面气压则比全年平均为高。

Wherein, the chemical formula of said compound is γ-HaKbNac(H2O)dNixM1-XO2 and the method comprises that mixing the nickel salt solution and at least one metal salt solution to attain the solution A; preparing caustic soda or caustic potash solution and adding sodium carbonate or potassium carbonate to attain the solution B; preparing the ammonia solution C; reacting the A, B, and C, processing the solid-liquid separation to attain the ball α nickel hydroxide; reacting with the oxidant in the solution of caustic soda or caustic potash to attain the black solid-liquid mixture and processing the solid-liquid separation to attain the ball γ hydroxyl nickel oxide.

其化学表达式为γ-HaKbNac(H2O)dNixM1-XO2，将镍盐溶液与至少一种金属盐溶液混合得溶液A，配制氢氧化钠或氢氧化钾溶液，加入碳酸钠或碳酸钾得溶液B；配制氨水溶液C；将A、B、C反应，固液分离，得球形α氢氧化镍；在氢氧化钠或氢氧化钾溶液中与氧化剂反应，得黑色固液混合物，再固液分离，得球形γ羟基氧化镍。

In this paper, a series of lunar map projection formulas are deduced including azimuthal projections, cylindrical projections and conical projections. The lunar map projections software is compiled. By caculating lunar map projection distortions, their projection distortion rules are found. Base on the lunar exploration mission, the lunar map projection scheme is given in this paper. The azimuthal conformal projection or the circumcenter perspective azimuthal projection is usually used in small areas, especially in two poles. When the whole map of the moon is needed, the azimuthal conformal projection or the circumcenter perspective azimuthal projection is used within 10° in the poles, and the traverse tangent cylindrical conformal projection or the normal secant conical conformal projection can be used in else areas, furthermore, band-division is necessary to reduce the projection distortion.

本文推导了基于月球参考球的各种投影公式，主要包括方位投影、圆柱投影和圆锥投影；编制了月球地图投影计算软件；对多种月球的投影变形进行了详细的计算，总结分析了各种月球投影的变形规律；结合月球探测的需要，给出了月球投影方案的建议：对于局部的面积较小的投影区域，建议使用等角方位投影或外心透视方位投影；如果绘制月面全图，在两极10°范围内采用等角方位投影或外心透视方位投影，其余区域可以采用等角横切圆柱投影和等角正割圆锥投影，并且要进行分带处理。

Dhofar 1180 is a unique lunar meteorite that differs petrographically and geochemically from all other lunar meteorites and lunar samples.It comes from a region on the lunar surface that has not been sampled by any other known lunar rocks.

Dhofar 1180的矿物学、岩石学和微量元素地球化学特征与已知的月球陨石和月岩样品有明显的差异，它来自月球表面的一个新的未知地区。

In this paper, the theories of lunar control network foundation and lunar map projection are studied. Three foundation methods of lunar control network and the progress in American lunar control network are summarized and analyzed.

月球大地测量是月球探测的主要任务之一，本文主要对月面大地控制网的建立理论以及月球投影的理论和方法进行研究。

In addition to the family reunion, visiting friends and other essential elements; Hong Kong's Spring Festival features include : Lunar New Year Fair : A few days before the Lunar New Year, held in various districts, including the annual Lunar New Year Fair in Victoria Park's most popular, selling peach, chrysanthemum, narcissi and other Lunar New Year flowers and other commodities.

除了合家团圆、拜访亲友等必不可少的内容；香港的春节特色项目还有：年宵花市：农历新年前数天在多区举行，其中一年一度的维多利亚公园年宵花市最热闹，出售桃花、菊花、水仙花等各种贺岁鲜花及其他商品。

According to authors' understanding on the density contrast of the lunar crustal and mantle materials, depths of typical mascons were estimated using various approaches. The estimations indicate that the mascon in Mare Orientale may caused by a lunar mantle plum, a basaltic lava with high density.Key words lunar gravity; mare; Mascon; clementine; lunar prospector

从宏观角度看，月球布格重力异常与月球地形起伏是相关的，统计结果表明它们呈弱负相关，从均衡角度来说，在月球停止大规模内部物质运动之前，月球壳幔可能已基本达到均衡；从Mascon深度估算结果来看，一些大型的Mascon基本属于玄武岩浆&充填&型的，少数Mascon可能与月幔柱有关，如东方海Mascon。

From the results, we presume the Lunar interior solidified 3 billion years ago, massive planetoids' strike caused the unevenly distribution of metallic elements, made the metallic abundance in the surface of Lunar highland lower than Lunar mare generally, and lead to the formation of craters on the Lunar surface.

由此推测30亿年前月球内部逐渐固化，大量小行星对月表岩石频繁的撞击导致金属元素分布不均衡，使金属元素在月球高原地带普遍含量低于月海，同时也形成了现在我们看到的遍布月表的环形山。

On the basis of the metioned above, in the mass, the thesis amalyzes the ecological problems that Wuzhong has and the reasons that result then in , ecological construction acheivments and it"s consumable affecs ;then in detail and using the way combined fix quatity with quality , analyzes the condition, degree, mechanism, processof ecological caustic of various regions and kinds of ecological systems in Wuzzhong, juging the feasibility of restore and reconstruction of them. The paper indicates, as a whole ,the degree of eological caustic of the region is relative severity, but the diffefences between the plain region and the mountains region are very obvious, and all of them can be retored and rconstructed, wich has been proved by theory and practices. According to the conclutions and combining them with the mature theory ecological fumction dividings and the condition of Wuzhong"s mature and society , the study divides the region into seven ecological functional areas. On basis of the ecological construction strategic targets presented by the governments of the country and Ningxia,Wuzhong and the caustic condions of different ecological system in defferent areas, the author design the models of ecological restoration and reconstruction for the different ecological areas and how to use them.

在此基础上，从宏观上分析了吴忠目前存在的主要生态问题和形成原因、生态建设成就与成果自耗因素，接着着重从微观上对吴忠各地的生态致损情况、各类生态系统的受损度、受损机理和过程、生态恢复与重建的可行性进行定量和定性分析判断，指出从整体上看该区域生态受损比较严重，但存在着明显的山川二元结构，其恢复与重建在理论和实践上均证明是可行的，并据此结合已成熟的区域生态功能区区划理论，以吴忠的自然、社会条件和其它有关区划结果等为依据，对吴忠整体进行了生态功能区区划，然后根据国家、宁夏与吴忠三级政府出台的各级别生态建设战略目标、任务，按照有关生态恢复学等有关理论，详细地对七大生态功能区中各受损生态系统的恢复与重建模式进行研究，提出了不同的生物与工程模式及实施办法、途径、措施。

This conclusion, combined with the data obtained from the short-lived Hf-W and Sm-N d isotopic systematics, suggests that the Moon was initially accreted at 4.5 Ga, followed by development of the global lunar magma ocean. The primary lunar crust is composed by ferroan anorthosite which was produced by flotation of plagioclase during crystallization of the LMO. However, the mafic minerals, coevally crystallized with the plagioclase, sank to the base of the LMO due to their high density, and made up the main part of the lunar mantle, which served as the source during later mare basaltic magmatism.

根据这一年代资料，结合对月岩样品进行的短半衰期Hf-W与Sm-Nd同位素体系的研究结果，认为月球大致形成于45亿年，其后开始由岩浆海导致的内部核－幔－壳的分异，岩浆结晶的低密度斜长岩构成最初的月壳，而密度大的岩石构成月幔，而此月幔则成为后来月海玄武岩的主要岩浆源区。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？