求翻译：从1820年马拉耕田问世后，割草机、钢犁、脱粒机、马拉手割机、小麦播种机、玉米栽种机、谷物捆扎机、扎棉机等相继问世。是什么意思？

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From 1820 till the Ramallah after the advent of the mower, steel plow, threshing-machine, hand-cut, wheat, corn planted on planter, grain strapping machine, such as cotton were established.

The horse pulled after 1820 tills the fields being published, the grass cutter, the steel plow, the thresher, the horse handle sheared machine, the wheat seeder, the corn plant machine, the grain strapping machine, grip the cotton and kapok machine and so on to be published one after another.

From 1820 Mara after the advent of farming, mowers, steel ploughs, threshing, horse-drawn wheat hand cutting machine, planter, corn planting machine, grain cotton strapping, tie appearance.

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