The research on ecotourism is relatively substantial both at home and abroad.

本文主要從社會(huì)科學(xué)的角度，對(duì)生態(tài)旅游自拍日韩制服丝袜诱惑视频，尤其是其多重目標(biāo)和多個(gè)主體進(jìn)行了較為系統(tǒng)的研究日本美女性高潮。

Xinhua News Agency, as a result of the stock market downturn, the recent "size of a" bridge to reduce the "edge ball" obvious act of convergence, which is a substantial shrinking in bulk transactions could be verified.

新華社，由于股市低迷爽摸碰爽视频在线，最近的"一個(gè)"橋梁大小亚洲毛片不卡aV在线播放一区二区，以減少"擦邊球"行為明顯收斂，這是在大宗交易大幅萎縮可以核實(shí)亚洲美女搞黄色。

As the stock market downturn, the recent "size of a" bridge to reduce the "edge ball" obvious act of convergence, which is a substantial shrinking in bulk transactions could be verified.

由于股市低迷一区二区毛片视频在线，最近的"一個(gè)"橋梁大小在线鲁，以減少"擦邊球"行為明顯收斂中文日韩精品第56页视频在线观看，這是在大宗交易大幅萎縮可以核實(shí)。

Significant induction of glycosaminoglycan, which is known to retain substantial water, and increased collagen production are most likely responsible for wrinkle effacement.

皺紋的抹去很可能是因?yàn)檎T導(dǎo)表達(dá)了大量可保水的葡糖胺聚糖以及升高的膠原含量等原因所引起的色色视频看片。

The paper mill is next door ink factory, pollute large family, the sewage of effuse, need not add dye, bottle of on the spot, write regular script in big characters as used in Chinese calligraphy exercises to pupil, same black, economy, substantial, do not lose a portion.

墨水廠隔壁是造紙廠人人操五月肥妇，污染大戶(hù)，瀉出的污水人妻Av洒巴，不用加染料久久久久久久久国产一区，就地裝瓶，給小學(xué)生寫(xiě)大楷激情国产系列在线观看视频免费网站，一樣黑色兒亚洲国产美女网站，又經(jīng)濟(jì)，又實(shí)惠国产午夜福利在线对白，不丟份兒www.天堂网av。

Recently, computational electromagnetics made and is still making substantial progress.

近幾年，計(jì)算電磁學(xué)得到了長(zhǎng)足的發(fā)展国产迷晕暴力玩弄网站。

At the other is the possibility of a substantial effect, even to the elimination of monetary policy.

在其他是一個(gè)堅(jiān)固作用的可能性午夜免费在线污视频一区二区三区，甚而對(duì)貨幣政策的排除。

Satellite in elliptic orbit has a low velocity near apogee and will flight over a particular geographical area for a substantial part of its orbital period ("apogee dwell").

由于運(yùn)行于橢圓軌道上的衛(wèi)星在其遠(yuǎn)地點(diǎn)附近有較長(zhǎng)的停留時(shí)間在线视频小说图片一区，如果選擇軌道遠(yuǎn)地點(diǎn)位于覆蓋區(qū)域上空成人免费在线观看网址视频，則采用橢圓軌道衛(wèi)星星座以進(jìn)行區(qū)域性覆蓋以取得很好的覆蓋效果。

Primary results are shown as followings: 1. PH measuring results of soil solution and eluviation solution show that the ability of experimental plot the acid buffer capacity of soil is stronger under the experiment condition,there is no obvious acidification in soil which after acid rain eluviation. The result has substantial differences with that gotten by most of investigationers in similar work before.

這一結(jié)果與以往類(lèi)似研究中多數(shù)研究者得到的結(jié)論存在本質(zhì)區(qū)別91AA一级黄色片，原因可能在于此次試驗(yàn)的試驗(yàn)條件與以往研究的試驗(yàn)條件不同欧美日韩a√播放三区，其中最主要一點(diǎn)是在本次試驗(yàn)中使用的土壤樣品的重量比以往試驗(yàn)均顯著增大，而且使用的是土壤結(jié)構(gòu)和組成等均未經(jīng)破壞的原位土，從而使入滲酸雨與承受酸雨沉降的土壤之間的比例關(guān)系更接近自然酸雨沉降過(guò)程AV线天堂久，以此為基礎(chǔ)得到的試驗(yàn)結(jié)果應(yīng)該更加客觀中文字幕无码字幕亚洲欧洲日韩、可靠。

In order to complete the investigation, impersonality feasible experiment solutions and devices are designed independently to systemically investigate on activation and transfer characteristic of soil heavy metal under acid rain effect. Primary results are shown as followings:1. PH measuring results of soil solution and eluviation solution show that the ability of experimental plot the acid buffer capacity of soil is stronger under the experiment condition,there is no obvious acidification in soil which after acid rain eluviation.The result has substantial differences with that gotten by most of investigationers in similar work before.

這一結(jié)果與以往類(lèi)似研究中多數(shù)研究者得到的結(jié)論存在本質(zhì)區(qū)別亚洲图片乱伦视频，原因可能在于此次試驗(yàn)的試驗(yàn)條件與以往研究的試驗(yàn)條件不同人人干网站，其中最主要一點(diǎn)是在本次試驗(yàn)中使用的土壤樣品的重量比以往試驗(yàn)均顯著增大，而且使用的是土壤結(jié)構(gòu)和組成等均未經(jīng)破壞的原位土成年网站免费视频网站在线观看网址，從而使入滲酸雨與承受酸雨沉降的土壤之間的比例關(guān)系更接近自然酸雨沉降過(guò)程AV国自拍，以此為基礎(chǔ)得到的試驗(yàn)結(jié)果應(yīng)該更加客觀、可靠在线播放A级毛片。2国产成人嫖妓视频下载网站在线观看、酸雨對(duì)鹽基離子活化遷移產(chǎn)生的影響勿庸置疑，但是国产一区二区久久精品，在鹽基離子活化遷移的過(guò)程中欧美操逼电影，并沒(méi)有出現(xiàn)預(yù)想中的重金屬元素活化遷移現(xiàn)象，表明土壤中的重金屬元素并不如理論分析的那樣對(duì)酸雨沉降反應(yīng)敏感黄色网页在线欧美。