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.

根據(jù)這一年代資料，結(jié)合對(duì)月巖樣品進(jìn)行的短半衰期Hf-W與Sm-Nd同位素體系的研究結(jié)果，認(rèn)為月球大致形成于45億年，其后開始由巖漿海導(dǎo)致的內(nèi)部核－幔－殼的分異，巖漿結(jié)晶的低密度斜長(zhǎng)巖構(gòu)成最初的月殼久久久久久黃色網站，而密度大的巖石構(gòu)成月幔，而此月幔則成為后來月海玄武巖的主要巖漿源區(qū)欧美国产综合。

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.

本文推導(dǎo)了基于月球參考球的各種投影公式国产精品免费-区二区三区，主要包括方位投影、圓柱投影和圓錐投影美女隐私都位无遮挡的网站；編制了月球地圖投影計(jì)算軟件亚洲天堂AV网站；對(duì)多種月球的投影變形進(jìn)行了詳細(xì)的計(jì)算，總結(jié)分析了各種月球投影的變形規(guī)律国产啊V在线视频免费观看；結(jié)合月球探測(cè)的需要操逼欧美黄色，給出了月球投影方案的建議：對(duì)于局部的面積較小的投影區(qū)域，建議使用等角方位投影或外心透視方位投影欧美性生活视频高清在线；如果繪制月面全圖91系列在线观看免费，在兩極10°范圍內(nèi)采用等角方位投影或外心透視方位投影，其余區(qū)域可以采用等角橫切圓柱投影和等角正割圓錐投影欧美页，并且要進(jìn)行分帶處理美女脱了内裤打开腿让人桶。

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.

月球大地測(cè)量是月球探測(cè)的主要任務(wù)之一，本文主要對(duì)月面大地控制網(wǎng)的建立理論以及月球投影的理論和方法進(jìn)行研究老女人特黄毛片高清视频。

Comparison between the numerical results in earth orbit and that in lunar orbit shows the characteristics of the periodic distribution for thermal parameters of the solar array in lunar orbit, which will provide powerful references for the design of the solar array and the whole lunar satellite.

計(jì)算結(jié)果與地球衛(wèi)星的相應(yīng)數(shù)據(jù)進(jìn)行比較欧美黄片亚州黄片，明確了月球軌道上電池陣所得外熱流以及溫度的周期分布特點(diǎn)，為月球衛(wèi)星上太陽電池陣以及整個(gè)衛(wèi)星的設(shè)計(jì)提供了有利的數(shù)據(jù)參考黃色A片三級三級三級在线。

Chang'e-1 creates the seven "firsts" in China's space history: the first to probe the lunar; the first to break through near earth orbit; the first to take pictures for the moon, using stereophotograph to acquire 3-D images; the first to explore elements on the lunar surface; the first to investigate the thickness and distribution of lunar soil, using microwave radiometer; the first to introduce astronomical survey into space instrumentation and command; and the first to use Internet for further space instrumentation and command.

嫦娥一號(hào)開創(chuàng)了我國航天史上的七項(xiàng)第一：第一次探測(cè)月球；第一次突破地球近地軌道国产操女人；第一次為月球"畫像"2012AV视频中文字幕高清在线中文字幕，真正用立體相機(jī)來獲得月球三維影像；第一次探測(cè)月球表面元素中文字幕日韩国产精品强奸乱伦；第一次利用微波輻射計(jì)探測(cè)月壤厚度及其分布爱搞官网；第一次在航天器的測(cè)控中引入天文測(cè)量手段；以及第一次利用國際聯(lián)網(wǎng)對(duì)航天器進(jìn)行深控亚洲美女模特一级A片。

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.

除了合家團(tuán)圓欧美农村A片视频在线看、拜訪親友等必不可少的內(nèi)容；香港的春節(jié)特色項(xiàng)目還有：年宵花市：農(nóng)歷新年前數(shù)天在多區(qū)舉行一级作爱片免费，其中一年一度的維多利亞公園年宵花市最熱鬧日韩国产欧美，出售桃花内地自拍、菊花、水仙花等各種賀歲鮮花及其他商品狼友视屏在线。

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的礦物學(xué)特黄特色A级无码毛片视频、巖石學(xué)和微量元素地球化學(xué)特征與已知的月球隕石和月巖樣品有明顯的差異，它來自月球表面的一個(gè)新的未知地區(qū)国产白白视频在线观看。

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

從宏觀角度看黄片在线视频观看欧洲，月球布格重力異常與月球地形起伏是相關(guān)的，統(tǒng)計(jì)結(jié)果表明它們呈弱負(fù)相關(guān)免费看的黄色网站在线观看，從均衡角度來說国产黄色视频天天，在月球停止大規(guī)模內(nèi)部物質(zhì)運(yùn)動(dòng)之前，月球殼嵬炎耘穆读橙蘸悠翟谙卟シ牛可能已基本達(dá)到均衡色哟哟网站进入方法；從Mascon深度估算結(jié)果來看，一些大型的Mascon基本屬于玄武巖漿&充填&型的8x国产精品视频，少數(shù)Mascon可能與月幔柱有關(guān)一级特黄AAAAA片，如東方海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.

由此推測(cè)30億年前月球內(nèi)部逐漸固化免费观看激情视频，大量小行星對(duì)月表巖石頻繁的撞擊導(dǎo)致金屬元素分布不均衡色99久久综合网，使金屬元素在月球高原地帶普遍含量低于月海，同時(shí)也形成了現(xiàn)在我們看到的遍布月表的環(huán)形山榴莲视频ios频。

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.

松山機(jī)場(chǎng)在朔望月里www.99.cao，每逢陰歷朔日或望日，受太陽與月球之引潮力(Tide-producing force)方向一致一级伦奷视频免费A，太陽潮和太陰潮重疊影響级特大黄片视频影院国，其全日和逐時(shí)平均海平面氣壓比年平均為低；而每逢上弦和下弦時(shí)欧爱性爱一区，日地與月地的相對(duì)位置成直角人人操午夜免费官网，太陰潮和太陽潮相干擾，其全日和逐時(shí)平均海平面氣壓則比全年平均為高人人摸人人搞人h操人人干。