Analysis indicates that there is little difference in the displacement of tunnel and well control of stratum displacement by both methods. Plastic zone develops more obviously above the tunnel side by CRD method and is larger by CRD method than by dual sidewall guide pit method. It is comparatively obvious that the plasticity district develops in the side direction of the tunnel by dual sidewall guide pit method and the leading influence distance is also longer than that by CRD method. The development speed of plasticity district is comparatively fast in the range of the leading 3~6 m in CRD tunnel and 0~3 m in sidewall guide pit tunnel. There are different advantages by both methods for passing through sand layer.

結(jié)果表明在线看黄不卡免费AV，采用這2種工法時引起的隧道變形相差不是很大，都能較好地控制地層的變形农村一级特黄大片AAA；采用CRD法時產(chǎn)生的塑性區(qū)較雙側(cè)壁法大毛片a片一级片，且向隧道側(cè)上方發(fā)展較為明顯；采用雙側(cè)壁法時產(chǎn)生的塑性區(qū)在隧道側(cè)向發(fā)展較為明顯98自拍视频，超前影響的距離也大于CRD法女生被插喷水福利；采用CRD法時的塑性區(qū)在超前3~6m的范圍內(nèi)發(fā)展速度較快；采用雙側(cè)壁法時的塑性區(qū)在超前0~3 m的范圍內(nèi)發(fā)展速度較快午夜免费福利电影网；對于隧道穿越砂層而言最新日韩午夜在线电影网站观看，2種工法各有優(yōu)勢。

The regiment staff commander, Captain N.M.

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In Chapter 3, we discuss the self-adjoint boundary-value problems for products of m differential operators generated by the same symmetric differential expression of order n defined on a, b

第三章 討論了m個由同一n階對稱微分算式生成的賦予某種邊界條件的微分算子乘積自伴邊值問題，結(jié)合常微分算子自伴擴張的一般構(gòu)造理論国产黑丝足交视频，分別給出了兩個四階微分算子普通话熟女高潮对白视频、兩個n階微分算子、m個n階微分算子乘積自伴邊條件的解析刻劃黄色网站爱观赏，得到了乘積微分算子是自伴的充分必要條件及與乘積算子自伴性有關(guān)的一些有益結(jié)果艳情视频一区。

Taking a winter wheat field (4 400 m2) of Jinghai county seed farm as experimental plot,sampling by regular grid with with 10 m ×10 m grids,48 sample points were oriented by GPS receipt machine to analyze soil water content at the depth of 0~20 and 20~40 cm in pri-winter,jointing stage and filling stage of winter wheat.The spatial distribution map of soil water of the winter wheat field using geostatistical analyst model of ARC/INFO was drew.And the spatial variability of soil water in vertical and horizontal direction was analyzed.The results could offer scientific evidence for the deciding of the exact time and quantity for winter irrigation.

以天津市靜海縣良種場內(nèi)一塊長約110m日韩不卡毛片午夜在线看片,，寬約40m的冬小麥田作為試驗區(qū)肥熟女视频一区二区三区，采用規(guī)則格網(wǎng)采樣，按照10 m ×10m設(shè)置格網(wǎng)久久久久精品香蕉免费看，共設(shè)48個采樣點一级黄色网站视频官段，通過GPS手持機進行定位，分別于小麥越冬前激情小说激情图片激情视频、拔節(jié)期裸体美女黄十八禁免费网站、灌漿期，利用便攜式土壤濕度數(shù)據(jù)采集器對試驗地各個采樣點0~20欧美精品无遮挡、20~40 cm 2種深度土壤含水量進行了測定日本高清www在线观看视频，利用ARC/INFO的地統(tǒng)計分析模塊繪制了冬小麥3個不同生育期試驗區(qū)土壤水分空間分布圖，并分析了其垂直和水平方向的空間變異特征国产一线在线观看，以期為確定最佳灌溉時機和灌溉量提供科學(xué)依據(jù)激情图片激情综合。

It was found that the rolling-up vent had a higher ventilation rate (up to 2.32 times) than the continuous roof one, the better ventilation (more than 60% at the wind speed of 3.0 m/s) could be achieved with vents near the ridge of the roof instead of near the gutter, and the obvious reduction (18%-22% at the wind speed of 3.0 m/s) in the rate values when an insect-proof screen was fitted to it, in the case of full opening of the vents.

研究表明人人做人人操，在試驗條件下，當(dāng)通風(fēng)口完全打開時www.黄欧美，卷膜通風(fēng)系統(tǒng)比天窗開啟式具有可高達2.32倍的通風(fēng)率日韩精品一区在线观看量；在風(fēng)速為3 m/s時，位于拱頂脊部的通風(fēng)口比位于拱底部的通風(fēng)率大60%日韩高清自拍区视频在线观看；在同樣條件下91popn，防蟲網(wǎng)可把通風(fēng)率減少18%～22%。

Using the relative reflection as weighting factor, the weighted mean of the surface albedo over Dunhuang Gobi in typical arid region is calculated and its values are 0.255 ± 0.021. After canceling the interference of the buildings, the mean values of the roughness length averaged with logarithm is 0.0019 ± 0.00071 m. After removing the influence of the oasis, the soil wetness factor computed with data under condition of no precipitation is 0.0045. After removing the influence of the precipitation .the mean values of the soil heat capacity over Dunhuang Gobi in typical ac-id region is 112 × 10 ~6 m~(-3)K~(-1), a bit smaller than the values observed i n HEIFE. But the soil heat diffusivity and conductivity are about one of those observed in HEIFE. The soil water content over Dunhuang Gobi in typical synoptic condition is very little and does not exceed 1% basically.

并且利用相對反射為權(quán)重加權(quán)平均国产视频福利，計算得到典型干旱區(qū)敦煌荒漠戈壁的平均反射率為0.255±0.021国产网站免费；剔除建筑物干擾后，利用對數(shù)平均法計算的粗糙度長度平均值為0特级性交毛片，0019±0.00071 m亚洲国产鲁鲁鲁；剔除綠洲影響后，用無降水影響的資料確定出土壤濕度影響因子為0.0045精品自拍电影网；剔除降水影響后免费精品欧美黄在线，用觀測資料計算的敦煌典型干旱區(qū)荒漠戈壁的熱容量平均值為1.12×10~6m~（－3）K~（－1），比&黑河試驗&在戈壁和在其它沙漠觀測的有關(guān)值略小一些黄片a片在线免费看，但熱擴散率和熱傳導(dǎo)率都比&黑河試驗&在戈壁觀測的值小一倍左右国内偷拍高清精品免费视频；觀測的敦煌戈壁典型天氣條件下的土壤含水量非常小，基本上不超過1％欧美视频免费一区。

The spectra structure of M-band and the ion distribution of laser-produced plasma is very important for the research on the inertial confinement fusion.

激光等離子體M帶輻射光譜結(jié)構(gòu)以及電離狀態(tài)的研究是激光聚變研究領(lǐng)域中的重要內(nèi)容深夜在线，開展金M帶譜細致結(jié)構(gòu)研究有利于了解等離子體中物理過程的詳細信息，正確地預(yù)測激光等離子體的電荷態(tài)分布對于理解高溫等離子體中的輻射強弱日韩性色自拍视频网站，能量沉積和平衡至關(guān)重要国产碰碰碰。

He said to M.,"Just feel my body." M. was greatly amazed.

他對M說：&只是感覺一下我的身體。&

A novel all-organic complex thin film,tetrathiofulvalene/m-nitrobenzylidene propanedinitrile,was grown by a vacuum hot-wall deposition.

用真空熱壁法生長了一種新型全有機復(fù)合薄膜TTF/m-NBP(tetrathiofulvalene/m-nitrobenzylidene propanedinitrile)欧美老妇激情BBW。

The results show: 96.7% of CG appeared within the range of 40 to 55 dBz, and the center of maximum CG density always coincided with the center of intense echoes, but CGs seldom appeared above 65 dBz. often concentrated around the area with VIL greater than 40 kg · m-2, and the center of maximum CGdensity frequently located around the margin of the center of VIL.

結(jié)果表明在 MCS 強雷暴演變過程中：①總地閃數(shù)的96.7%集中落在 CR 為45～55 dBz 的回波區(qū)域內(nèi)人人肏人人艹，在 CR 大于60 dBz 的強回波區(qū)域內(nèi)地閃總數(shù)卻很少；地閃密集中心的位置與 CR 大于等于50 dBz 的強度中心常常重合公妇A中文在线观看；②地閃密集中心與 VIL 中心常常不重合色狼网站在线观看，常落在 VIL 高值中心的邊緣或落在 VIL 為20～30 kg · m-2的區(qū)域中；在 VIL 小于20 kg · m-2的地方存在較為活躍的地閃狼友无码。