小前犁

The skeletal system showed a series of evolutive characteristics, for example, it had one premaxillary and one frontal bone, the malaris disappeared, the squamosal became smaller, the vomer became thinner, the suturae between the dentary and splenial and the suturae between the coronoid and angular was blurry.

表现出了一系列进化特征，如前颌骨愈合成1块，额骨也愈合成1块，颧骨消失，鳞骨变小，犁骨薄弱，下颌夹板骨与齿骨、冠状骨及隅骨之间的骨缝不明显，愈合程度较高。

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.

它的主要优点是：1、犁头在前能耕狭田窄地，田尖地角，再小的田地都可胜任。2、螺旋犁头高速旋转，被耕泥土熟烂平整，可省去耙泥、压土等碎土整地过程。3、螺旋犁头工作时将泥土往后推，有将机器往前拉的牵引力，因此可以省力，可用较小的发动机驱动。4、由于螺旋犁头工作时本身有牵引力，克服了原式华犁的对闯阻力，在机器下部装上托盘就可耕作深泥脚水田。5、把螺旋犁头换上小搬运轮，就可利用犁头轴的动力驱动搬运轮，在20—30厘米宽的小山路或田埂上行驶完成搬运。6、根据该机工作原理，还可设计成多犁头或各种形式，适合平原的大型耕作机械。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。