After contrasting and optimizing this paper gets a set of parameters. Then according to these parameters the paper sets up entity model, and after validating and analyzing with finite element it can save time of calculating. On the other hand, it can provide a good method of design of moldboard plow surface.

通過對這四個階段中土垡的運動學(xué)和動力學(xué)分析研究又粗又大又长又硬起来了，建立了犁體牽引阻力的數(shù)學(xué)模型；通過對比分析得到較優(yōu)的一組參數(shù)欧美一区二区肏屄，然后以該組參數(shù)為依據(jù)進(jìn)行參數(shù)優(yōu)化午夜影院性，最后以優(yōu)化后的參數(shù)建立犁體實體模型，應(yīng)用有限元進(jìn)行分析一级黄片免费看视频，節(jié)省了計算時間和提高了計算效率黄页网站免费视频福利区，為今后犁體曲面設(shè)計提供了一種方法。

A plow equipped with a double moldboard that turns up the soil on each side of the furrow, often having an attached drill for seed planting.

雙壁開溝犁犁頭后部有兩塊曲面鐵板的犁乱伦小说图片，可翻開犁溝兩邊的泥土免费黄色日本网站，常附有播種機注意，注意力集中

This paper analyses and calculates the plow parameters about two kinds of high speed plows LEMKEN and KUHN, and studys the relation between the geometric parameters of shape of moldboard plow surface and soil properties, plowing quality, forces properties, plowing speed, resistance and energy dissipation during the plowing. Then according to the direction of developing high efficiency and saving-energy agriculture, under the premise of good farming quality this article puts forward a kind of method setting the mathematics model about plow resistance through the new cultivation principle and the new design principle.

本文通過對比分析的手段對LEMKEN和KUHN兩種高速犁參數(shù)兩種犁體曲面參數(shù)進(jìn)行量化分析計算全国免费人人干，分析犁體曲面形狀的幾何參數(shù)與耕后質(zhì)量高清三级黄色淫妇、土壤的力學(xué)特性、耕速女同在线视频一区二区、阻力和功率消耗等相關(guān)關(guān)系黑人巨茎精品欧美一区二区，結(jié)合目前高效節(jié)能型農(nóng)業(yè)的發(fā)展方向，提出在保證作業(yè)質(zhì)量的前提下日韩孕妇自拍视频直播网站在线观看，應(yīng)用新型耕作理論和新型設(shè)計理論建立牽引阻力數(shù)學(xué)模型欧美性爱电影免费在线观看。

A plow equipped with a double moldboard that turns up the soil on each side of the furrow,often having an attached drill for seed planting.

雙壁開溝犁犁頭后部有兩塊曲面鐵板的犁，可翻開犁溝兩邊的泥土黄a淫荡视频，常附有播種機那個農(nóng)民將啪镁镁放缢访篮诎着洌縛在犁上，用刺棒驅(qū)趕它們18禁黄网站女禁片免费。

A plow equipped with a double moldboard that turns up the soil on each side of the furrow ,often having an attached drill for seed planting.

雙壁開溝犁犁頭后部有兩塊曲面鐵板的犁二级片视频免费观看，可翻開犁溝兩邊的泥土，常附有播種機

Keywords Bionics;Soil Adhesion;Adhesive Mechanism;Cavity;NegativeAir Pressure;Bionic Plow- moldboard .

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While traditional farming experiences and preliminary experiments on minimum tillage showed a preference of alternating furrow slice inverting and deep loosening without inverting in some of the agricultural regions in China, the development of a PTO driven furrow slice inverting rotary plow as primary tillage implement inplace of the conventional moldboard plow was justified from the standpoint of less tractor traffic, less soil compaction, less energy consumption, sowing in time etc.

從翻耕或翻耕與深松相交替將在相當(dāng)廣大的地區(qū)、相當(dāng)長的時期內(nèi)特级性爱AA片，作為一種基本的田間作業(yè)環(huán)節(jié)而存在這一認(rèn)識出發(fā)免费一级A男女牲交，用"假想旋翻垡片"的概念研究了旋翻在幾何尺寸上的可能性及其限制條件，并從保省耕作法的節(jié)能免费激情图片视频、趕農(nóng)時亚洲国产黄色视频免费网站、省人工減少土壤壓實、經(jīng)濟高效等方面對旋翻進(jìn)行了考察一级性爱在线看，指出發(fā)展一種動力驅(qū)動久久九九久九久、原溝旋轉(zhuǎn)翻垡的基礎(chǔ)耕具的必要性和可行性。

This paper makes the soil movement be four sections: a Cutting soil with edge; bThe soil movement along the plowshare and plow chest's below surface; c The soil movement along the plow cliff ;dThe soil movement beyond the plow in the course of farming in order to study the force of moldboard plow surface.

本文在研究犁體曲面受力時亚洲爱爱小视频，把犁耕時土垡的運動分為四個階段：a 用鏵刃切開土垡精品国产A片；b 土垡沿犁鏵和犁胸下部曲面運動；c 土垡沿犁壁運動在线观看麻豆；d 土壤超出犁壁曲面運動av在线.con。

While traditional farming experiences and preliminary experiments on minimum tillage showed a preference of alternating furrow slice inverting and deep loosening without inverting in some of the agricultural regions in China, the development of a PTO driven furrow slice inverting rotary plow as primary tillage implement inplace of the conventional moldboard plow was justified from the standpoint of less tractor traffic, less soil compaction, less energy consumption, sowing in time etc.

從翻耕或翻耕與深松相交替將在相當(dāng)廣大的地區(qū)、相當(dāng)長的時期內(nèi)欧美特級黄片，作為一種基本的田間作業(yè)環(huán)節(jié)而存在這一認(rèn)識出發(fā)大学生一级A片免费播放，用&假想旋翻垡片&的概念研究了旋翻在幾何尺寸上的可能性及其限制條件，并從保省耕作法的節(jié)能免费在线看片91、趕農(nóng)時黄色wwwxxxx在线免费、省人工減少土壤壓實、經(jīng)濟高效等方面對旋翻進(jìn)行了考察国内精品久久久久精品99，指出發(fā)展一種動力驅(qū)動尤物A片毛在线视频免费观看、原溝旋轉(zhuǎn)翻垡的基礎(chǔ)耕具的必要性和可行性。