Farmers plow and seed in the field at spring.

農(nóng)民在春天犁地播種国内机关自拍视频在线观看。

And he invented a combined plow and seeder.The seed went into a barrel with holes in it.

把種子裝進一個有孔的桶里，把桶放到犁鏵的后面国产韩国精品福利小视频，桶隨著犁鏵移動一区精品在线，旋轉(zhuǎn)起來，從引洞里搖落出種子黄色视频热播无码。

Based on an example from Datong Coalmines Group,the paper analyses possibility and usage of heavy plow under the conditions of thin seam coal face with Two Hard Roofs and gives out some proposals.

通過大同煤礦集團公司采用全自動刨煤機系統(tǒng)開采薄煤層的實例91大神大战酒店翘臀美女，分析了在&兩硬&薄煤層地質(zhì)條件下進行刨煤機開采的可行性和作用，并針對性地提出了建議欧美成在人现视频。

You can use apples, plow, orange,+ water + rock candy fruit boiled water to feed him, do not worry, a drink, more than enough to feed several times.

你可以用蘋果www.色综合,com，犁，橘子成人影院蜜桃传媒在线播放，+水+冰糖煮成水果水來喂他中国老熟女BBWXXXX，你不要著急，一次不喝69视频在线，多喂幾次就好了日本AAAAA级婬片A片AAAAAA。

The weed-killer, prevents and kills off dike and dam , airport , road etc. must plow land , paddy rice , rape etc.

項目介紹（簡介、技術特點久久综合色色、應用范圍国内偷拍第一视频区、市場前景、效益分析及對投資者要求黄色毛片免费看永久一。500字以內(nèi)

Rotary plow ; energy conservation ; computer aided design

旋轉(zhuǎn)耕耘機国内在线精品一区二区AV；節(jié)能；計算機輔助設計

This simulation system will help to improve innovation design level of high-speed cultivation machine such as high-speed plow and high-speed rotary tiller. SPH; back-rotary tilling ; simulation ; soil-tool interaction ; high-speed cutting

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Forming a corresponding complete set with other farm implements, it can take rotary tillage with sitting, plow and plough with sitting, plough with walking, disc plough, ditch, harvest, lawn repair, transport.

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Its main advantages are: 1 Ploughshares former can Geng Sada narrow, sharp-angle, and then a small field can be competent. 2, spiral Ploughshares high-speed rotation, tillage Shulan soil formation, may omit rake mud, soil and other pressure Suitu site preparation process. 3, spiral Ploughshares work will push the soil later, will pull the machine forward traction, it can effort can be smaller engine-driven. 4, the spiral Ploughshares work itself traction to overcome the original style, to break through resistance to the plow, the machine tray can be fitted with the lower part of farming feet deep mud paddy field. 5, the spiral Ploughshares put on the handling round, you can use the drive shaft Ploughshares handling round, 20-30 cm wide in the small mountain ridge or drive to complete removal. 6, according to the plane of principle, can also be designed as a multi-Ploughshares, or a variety of forms, suitable for large-scale farming machinery Plain.

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As a warm July rain falls on a patchwork of smallholdings half a day's walk from the nearest road, the women harvest yams, the men plow behind sturdy oxen and fat chickens, goats and cows roam outside mud huts.

在從最近道路步行用半天時間的地方亚洲刺激第一页，塊塊田地剛剛受到一場七月份暖雨的洗禮。婦女們正在那里收獲薯蕷麻豆AV最新在线观看网址，男人們在用牛耕地色成综合，肥雞，山羊和奶牛在泥巴棚屋外悠哉游哉地散步国产激情全集在线观看网站。