It plays an important role in the process of energy exchange, biogeochemical cycles and hydrological cycle in land surface.

它在陸地表面的能量交換過程欧美日韩xxxx、生物地球化學(xué)循環(huán)過程和水文循環(huán)過程中扮演著重要的角色A片一级毛片。

The reduction thermodynamics of Na 2CrO 4 and chromium oxides in the process of sintering and ironmaking is studied,and the simulating experiments in the laboratory and industrial experiments in 600 m 3 blase furnace are carried out.

介紹了鉻渣用作煉鐵熔劑的基本思想，研究了燒結(jié)－煉鐵工藝中Na2CrO4和鉻氧化物還原的熱力學(xué)一级特黄A片在线观看，并進(jìn)行了實(shí)驗(yàn)室模擬試驗(yàn)和600m3高爐的工業(yè)試驗(yàn)。

In the process of doing so, you will blaze a new trail of optimism in your mental setup.

當(dāng)你沉醉其中国产一级a黄在线播放，你將會(huì)走出一個(gè)新的樂觀的精神重建之路免费一级A片国产在线观看。

It needs some mechanics to participate in the process of in vitro blood vessel reconstruction.

在體外構(gòu)建血管的過程中需要一定的力學(xué)因素的參與

If you want to do well in study ,you must be an active participant in the process of learn not a passive bystander.

要在學(xué)習(xí)上做的好无码中文字幕A片在线，你必須在學(xué)習(xí)過程中成為一名積極的參與者，而不是一名消極的參觀者亚洲超清黄色视频在线观看。

Since 1991, the teaching group of veterinary pathology in Inner Mongolia Agricultural University have accomplished 3 research subjects supported by the National foundation of science and technology. In the process of research, a local AEV strain, the AVE-NH937 strain, was isolated and established. The detailed pathological lesions and the dynamic location of AEV in natural and experimental cases of chicken, chickling and embryos were reported.

全世界和我國的科學(xué)工作者對(duì)本病進(jìn)行了廣泛的研究老夫妻性交免费视频，內(nèi)蒙古農(nóng)業(yè)大學(xué)獸醫(yī)病理學(xué)科自1991年，連續(xù)3次獲得國家自然科學(xué)基金委員會(huì)的資助www.zmjzk.com，分離并建立了AEV-NH937株国内揄拍国内孞精品人妻浪潮AV，系統(tǒng)描述了自然病例和人工感染的成年雞、雛雞美叉人人人一,级黄片、雞胚的病理變化影音先锋av下载，人工感染后AEV在雞體內(nèi)的動(dòng)態(tài)分布，并制備出瓊擴(kuò)抗原和滅活油乳劑疫苗用于臨床檢測(cè)和預(yù)防直接免费观看的黄色网站，取得了重要研究成果涩涩毛片在线视频看看。

In the late half of 20th century, the visual angle of Chinee studies in Japan probed to view China using a new light andchanged the old view that seeing China as a backward country lagging behind in the process of modernization.

20世紀(jì)后半葉，日本漢學(xué)研究的視角改變了以往把中國視為在現(xiàn)代化道路上落伍的后進(jìn)國家的看法欧洲黄视频在线观看，轉(zhuǎn)換了審視新中國的眼光色妞网视频二区视频。21世紀(jì)前半葉日本漢學(xué)理想的研究視角應(yīng)當(dāng)是：我們?cè)鯓釉谡J(rèn)識(shí)中國時(shí)，把歐洲的現(xiàn)代與社會(huì)主義加以相對(duì)化中文字幕精品亚洲一区？

Selecting chlorination of hydroxyl group in sucrose 6-acetate is a key in the process of making sucralose.

蔗糖-6-乙酸酯的選擇性氯化是合成三氯蔗糖的關(guān)鍵步驟日韩亚洲欧美精品一二区。

Selecting chlorination of hydroxyl group in sucrose 6-acylates is a key in the process of making sucralose.

蔗糖-6-乙酸酯的選擇性氯化是合成三氯蔗糖的關(guān)鍵步驟。

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

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