Through consolidating the lands rationally and scientifically, the effective areas of cultivated lands can be obviously increased, and the qualities of the lands can be improved. The method can accelerate the land use at the level of intensivism, and realize the dynamic equilibrium of total cultivated land at last. Simultaneously, the method also can relieve the contradictions between people and lands, and improve the conditions of agricultural production and ecological environment. It can ensure the sustainable use of land recourses and make a full satisfaction for the demanding of land recourses on the social and economic development

同時(shí)對(duì)我國(guó)當(dāng)前農(nóng)村土地開(kāi)發(fā)整理的模式進(jìn)行了論證久久久久久久久久久久久久久久久，通過(guò)對(duì)土地科學(xué)合理的整理偷拍播放，不但能增加有效耕地面積，提高土地質(zhì)量偷怕视频区永久入口在线观看，促進(jìn)土地集約利用4444www免费看，實(shí)現(xiàn)耕地總量動(dòng)態(tài)平衡，同時(shí)還可以緩解人地矛盾五月天色色香蕉，改善農(nóng)業(yè)生產(chǎn)條件與生態(tài)環(huán)境欧洲免费av，保證土地資源的持續(xù)利用，滿足社會(huì)經(jīng)濟(jì)發(fā)展對(duì)土地資源的需求欧美久久久久。

The application of sulfur isotope tracing involves the physical and chemical conditions, origin of ore-forming minerals, denudating degree of orebody, ore enriching position and genesis types of deposits. In the application, the geology of the hydrothermal deposit should be well understand to distinguish metallogenic epochs and judge the isotopic fractional equilibrium state, combined with the Ohmoto mode to study the factors possibly affecting hydrothermal fluid system.

在總結(jié)前人研究基礎(chǔ)上狼友精品在线，綜述了硫同位素在熱液成礦作用中成礦物理化學(xué)條件、成礦物質(zhì)來(lái)源九九在线免费视频、礦體剝蝕程度影音先锋AV每日精品、礦化富集部位国产乱伦合集、礦床成因類型等的示蹤意義，認(rèn)為硫同位素示蹤應(yīng)用須在了解熱液礦床基礎(chǔ)地質(zhì)前提下九九免费视频网站，準(zhǔn)確區(qū)分成礦期次国产怕怕，判別硫同位素分餾平衡狀態(tài)，結(jié)合Ohmoto模式綜合研究影響成礦熱液體系的各種因素才可以賦予同位素準(zhǔn)確的地質(zhì)內(nèi)涵片毛视频在线观看网站。

According to engineering exploration and lab tests data and field investigation, the deformation mechanism of the landslide has been discussed. The landslide stability has also been calculated and analyzed under the conditions of impounding and precipitation by means of limited equilibrium theory.

根據(jù)野外現(xiàn)場(chǎng)調(diào)研和室內(nèi)試驗(yàn)小度小度我要看欧美三级黄色片、工程勘察資料，探討了天池口滑坡的變形機(jī)制亚洲免费视频在线播放，并運(yùn)用極限平衡理論分析了滑坡在蓄水和降水時(shí)的穩(wěn)定性。

Modeling and stability analysis problem of linear switched system are emphasized in this part and main results include:(1) Through investigation in the projection of 〓 on x, where x denotes continuous state vector, a series of sufficient conditions for stability, asymptotic stability and unstability of linear switched system's equilibrium in the sense of Lyapunov are achieved. And also, a sufficient and necessary condition for state bounded stability of linear switched system is received.(2) For a class of periodical linear switched system whose switching sets are a group of ordinal lines starting from the original point, it's proved that state bounded stability can be defined by the running characteristic in a single period (3) Based on linear switched system, the concept of linear switched system network is put forward. Linear switched system network is a complex network interconnected by many linear switched systems.

這部分著重研究線性切換系統(tǒng)的建模與穩(wěn)定性分析問(wèn)題手机日本黄色电影网站，主要成果包括：（1）通過(guò)考察〓在x上的投影各种作爱视频，得到線性切換系統(tǒng)的平衡點(diǎn)在Lyapunov意義下穩(wěn)定、漸近穩(wěn)定及不穩(wěn)定的一系列充分條件在线看片777Av免费观看，并得到了線性切換系統(tǒng)狀態(tài)有界穩(wěn)定的一個(gè)充要條件国产性爱欧美性爱在线播放；（2）證明了對(duì)于一類切換集為從原點(diǎn)出發(fā)的一組射線的周期線性切換系統(tǒng)，其狀態(tài)有界穩(wěn)定可根據(jù)一個(gè)周期內(nèi)的系統(tǒng)運(yùn)行特性來(lái)判定免费无码是黄色；（3）在線性切換系統(tǒng)的基礎(chǔ)上提出了線性切換系統(tǒng)網(wǎng)絡(luò)的概念国产精品激情欧美可乐视频99，線性切換系統(tǒng)網(wǎng)絡(luò)是由多個(gè)線性切換系統(tǒng)交互作用而形成的復(fù)雜網(wǎng)絡(luò)。

This report is a compilation of the data for 10 sets of conditions, or for a total of 339 equilibrium runs in recirculating flumes.

這份報(bào)告的資料匯編為10套條件或總共339相成平衡循環(huán)水槽久久五月丁香中文字幕。

For tightening and receding of wefts, the conditions under which wefts recede from the back beam and move forward towards the front beam relative to warps are developed by combining equilibrium condition of forces of warp with critical slip condition of weft.

針對(duì)緯紗的打緊與回退問(wèn)題黑人猛精品无码一区二区三区，將經(jīng)紗的力平衡條件與緯紗的臨界打滑條件相結(jié)合，建立了緯紗相對(duì)于經(jīng)紗向后梁一側(cè)回退及向胸梁一側(cè)前移的條件性爱黄色三级片毛片。

Thesis studied adsorptive equilibrium time and adsorption capacity of NF on simulated nuclide strontium in a few conditions including temperature,pH value,concentration and medium with the intermittence method and offered some references for valued mid-lower radwaste disposition.

本文采用間歇法來(lái)研究沸石在不同環(huán)境條件下(濃度成年免费a级毛片免费看91青、溫度、pHpp.com午夜、介質(zhì))對(duì)模擬核素Sr2+的吸附性能及其平衡吸附時(shí)間毛片A级黄片在线看，為評(píng)價(jià)中低放核廢物處置效果提供一些參考依據(jù)。

Capovilla from Mexico\'s first gave the opening film of the bubble equilibrium equations and boundary conditions in a certain line tension.

Capovilla等人首先給出了在一定線張力下得得啪得得干得得射，開(kāi)口膜泡的平衡方程及邊界條件国产嫖妓视频一区二区。

When the modified system collapses to a stable equilibrium or periodic oscillation, the existence of generalized synchronization can be converted to the problem of compression fixed point under certain conditions. Strict theoretical proofs are given to the exponential attractive property of generalized synchronization manifold.

即在響應(yīng)系統(tǒng)的修正方程在具有漸近穩(wěn)定平衡點(diǎn)或漸近穩(wěn)定周期軌道的情況下，滿足一定的條件www日本免费观看，可將廣義同步化流形存在性問(wèn)題轉(zhuǎn)化為L(zhǎng)ipschitz函數(shù)族的壓縮不動(dòng)點(diǎn)問(wèn)題1024在线观看精品视频，理論上嚴(yán)格證明了該廣義同步化流形的指數(shù)吸引性。