国产精品婷婷久久久久久,国产精品美女久久久浪潮av,草草国产,人妻精品久久无码专区精东影业

畢業(yè)設(shè)計(jì):分層切土大耕深旋耕滅茬施肥播種機(jī)旋耕機(jī)構(gòu)的設(shè)計(jì).zip

ZIP格式版權(quán)申訴手機(jī)打開(kāi)展開(kāi)

畢業(yè)設(shè)計(jì):分層切土大耕深旋耕滅茬施肥播種機(jī)旋耕機(jī)構(gòu)的設(shè)計(jì),±?òμéè??£o·?2??Díá′ó??é?Dy???e2?ê?·ê2¥???úDy???ú11μ?éè???????μ?÷êé1250ò3£?×?êy×ü??£o15576×êá??ò?é£ostrip tillage characteristics of rotary ía??·-ò?.pdf±?òμéè???...
編號(hào):65-287088大小:1.96M
分類(lèi): 論文>機(jī)械工業(yè)論文

該文檔為壓縮文件,包含的文件列表如下:

內(nèi)容介紹

原文檔由會(huì)員 lixiuhui7 發(fā)布

±?òμéè??£o·?2??Díá′ó??é?Dy???e2?ê?·ê2¥???úDy???ú11μ?éè??
?????μ?÷êé1250ò3£?×?êy×ü??£o15576
×êá??ò?é£o
Strip tillage characteristics of rotary ía??·-ò?.pdf
±?òμéè??????£o·?2??Díá′ó??é?Dy???e2?ê?·ê2¥???úDy???ú11μ?éè??.doc
?°?ú1¤×÷2?á?.doc
?μ?÷êé?ú·a??.doc
A0-·?2??Díá′ó??é?Dy???ú×ü×°í?.dwg
A0-μ??á×@@é.dwg
A0-?ò?ü×@@é.dwg
A4-?ú?¤.dwg
A3-óò????.dwg
A3-×ó????.dwg
A3-Dy??μ?×ù.dwg
A3-Dy??μ?.dwg
A4-×ó?áí·.dwg
A3-?ó?ì?¨?üì××@@é.dwg
A3-?21ü£¨3¤£?.dwg
A3-?¨?ü?á.dwg
A4-?¨?üì×.dwg
?D???aòa
?ü??à′£?1ú?úía3???á?ò?éù???¢?a???¢±£?¤D???×÷μè?a?÷μ?ò??μáD??×÷·?·¨oíáao??úDμ?ˉoμ?ˉ??ê??£?ú?ú×???ò?òa?óμ??°ìá??£??aá???éù2?±?òaμ?1|?ê??o?£?éù???¢?a???¢±£?¤D???×÷μè??×÷·?·¨??à′??±?2éó??°í?1??£???ú?÷2éó?μ?ê?ì??Dì?????ê?£?????ì?êμDDéù??£?ó?×÷???????2??μ?±í£???éù·?ê′?¢??ê′£?ìá??íáèà·êá|oí?1oμ?üá|£?í?ê±??éùá?íáèà?á?ˉá?£??éò???éùíáèàá÷ê§3ì?è?£??×÷×°???a?ˉμ?oí?¨μ?μ???o?×÷òμ,?ˉμ?oí?¨μ?μ??à?????ˉ?éò?′?μ??D??????oí?ó2Yμ???μ?,???ò?ˉμ??áμ????ˉ?a·′×a,ó??éò?′?μ??e2?μ???μ?£?2¢?ò?éò??úê?30%μ?è?á???o?£???óúμ??????°μ?1ú?ê?-óí????μ?é????ù′?à′μ?éú2ú3é±?μ?é???ê?·?3£óD±?òaμ?£?óéóú??óD??íáμ???DD?ú???ùò???óú×÷??μ??1μ1·üóDò??¨μ?o?′|?£
2¥??×°??DèóD????μ?êêó|D?oí?ü?ú×?2?í????2òa?óμ?1¤×÷D??ü£?±?D??ù?Y??òμ??ê?òa?ó×?μ?êêê±?¢êêá??¢?ú×???ò??·?3ì??t£?ê1×÷????μ?á?o?μ?éú3¤·¢óy?ù′??£?úDμ?ˉ2¥????è?1¤?ù?è×?è·£?é??3ò???£??òD§?ê???¢?ù?è?ì?¢í?ê±?aì???1üàí×÷òμ′′?ìá?o?μ?ì??t£?ê?êμ????òμ?úDμ?ˉμ???òa??ê?ê?????ò??£
ì?2¥ê?????×ó°′òa?óμ?DD?à?¢2¥á?oí2¥é?3éì?μ?2¥è?íáèà?D£?è?oó??DD?2íá?ò?1μ?·?ê??£??×ó??3?μ?D?ê??a?ù?èμ???×óá÷?£?÷òaó|ó?óú1è??2¥??£oD??ó?¢1è×ó?¢??á??¢óí2?μè×÷???£
1??ü′ê£oì??D£?ì???£?ì?2¥?£


Abstract
Recently a series of mainly on reducing plough ,avoiding plough and protecting plough and compound-mechanized technique come to use both in home and abroad.
For saving power consumption these methods are adopted and popularized widely. The technology of ploughing in line and mincing straw in line is applied in this work machine. It can reduce the stirring quantity, and cover the earth?ˉs surface with straw and decrease the erosion of wind and rain ,improve the soil fertility and the ability of resisting dry, meanwhile decrease the plough and running off of the soil. The plough unit works in the form of coordination of moving knives and static knives, so it can mince the straw and grass , and the removing axle is reversed then can uproot , saving 30 percent power consumption. And it is necessary to countervail the rising cost because the price of crude oil is rising ,and it is good for the paddy resisting to fall over .
Sowing machinery require higher adaptability so that can meet all kinds of working demand such as in time ,at rational and supplying a good condition to the paddy sow. It is more accurate efficient than man-hand and create a good condition of administrator superintendence
Sow in line is a method of sowing seed into soil according to distance and quantity of required£?then cover the seed with soil. The form of the seed discharged is stream of water. This technique is mainly used in paddy, wheat, broomcorn and so on.
Key words: mince in line plough in line sow in line

?? ??
?D???aòa 1
Abstract 2
μúò??? D÷?? 5
1.1 ??ìaμ?à′?′?°òaò? 5
1.1.1 ??ìaμ?à′?′ 5
1.1.2 ??ìaμ?òaò? 5
1.2 1ú?úía?D??μ?×′?? 6
1.2.1 1úíaμ??D??×′?? 6
1.2.2 1ú?úμ??D????×′ 6
1.3 ±??úDíμ??è??D?·??? 7
1.4 D??á 7
μú?t?? ?ú11éè?? 8
2.1?ú11?°?-àí 8
2.2×üì?éè?????? 9
2.2.1×é3é?°′??ˉí? 9
2.3 ?£òy1|?êμ?1à?? 10
2.3.1 í?à-?ú?éò?ìá1?μ?1|?ê1à?? 10
2.3.2 1|?ê??o??°??ó°?ìòò?? 11
2.3.3 Dy??μ?μ????ˉ·??? 12
μúèy?? ?D??′??ˉ3Y????μ?éè?? 14
3.1??ê?òa?ó 14
3.2 ?÷2??t?òòa?ééü?°éè??òa?ó 14
3.3 ?±3Y?2×?3Y???ú11μ?′??ˉéè?? 15
3.3.1 ?±3Y?2×?3Y??μ?ì?μ? 15
3.3.2 ?±3Y?2×?3Y??μ?éè???-?ò 15
3.3.3 ?±3Y?2×?3Y??μ?3?′?éè?? 16
3.3.4?±3Y?2×?3Y??μ????èD£o? 18
3.4′??ˉ?áμ?éè?? 22
3.4.1?áμ?×üì?éè?? 23
3.4.2?áμ??á11μ?éè?? 23
3.4.3?áμ?éè?????? 25
3.5 ?á3Dμ???è? 32
3.5.1 ?á3Dμ??????-?ò 32
3.5.2 ê1ó?1??ˉ?á3Dμ?ó?μ? 32
3.5.3 ?á3Dμ????? 32
3.5.4 ?á3Dμ?ê1ó?êù?üD£o? 32
μú???? 2à±?3Y????μ?×üì?éè?? 34
4.12à±?3Y????×üì?éè??oí×÷ó? 34
4.1.12à±?3Y????×üì?éè??òa?ó 34
4.2 2à±?3Y????éè???úèY?°òa?ó 35
4.2.1 ×é3é2?·? 35
4.2.2?÷òa2??t2?á? 35
4.2.3Dèòa±ê×¢μ???o?1?2? 35
4.2.4??ì??á11?÷òa3?′? 35
4.2.5 2éó?μ?1??ˉ?á3D×éo??á11oíì?μ? 35
μú???? ???×2à±?3Y????′??ˉ·?°?μ?éè?? 36
5.1 ′??ˉ±èμ?·????°?ˉá|2?êy 36
5.1.1 ????1y3ì 36
5.2 ???×??3Y??′??ˉμ?éè?? 38
5.2.1 éè??1y3ì 38
μúáù?? ??×÷×°??éè?? 43
6.1 ??ê? 43
6.1.1 íáèà??×÷μ???μ? 43
6.1.2 ???°??×÷·?·¨?°?÷ê? 43
6.2??×÷×°??μ?×é3é?°1¤×÷1y3ì 45
6.2.1 ??×÷×°???á11?òí? 45
6.2.2??×÷×°??μ?×é3é 46
6.2.3 1¤×÷1y3ìoí1¤×÷?-àí 47
D? ?á 48
??D?′? 49
2??????× 50