In this task , we presented and designed a system that can classify and recognize circular and quadrate parts and the intension image of industrial parts is the object of the system , human - computer communication mode is adopted to identify the parts 在本课题中，主要进行了对圆形和方形零件分类识别系统的研究和设计，针对的对象是工业零件的强度图像，采用人机对话方式来对零件进行识别。
Bile ducts of hilus hepatis , right or left lobe , medial segment and anterior right segment can be exposed and incised through hilus hepatis or quadrate lobe . all major intrahepatic bile ducts of the right lobe can be exposed and incised by an approach cutting through the liver parenchyma on its diaphragmatic surface 经肝门区或肝方叶可以显露和切开肝门胆管、左右肝管和左内叶、右前叶胆管，经肝膈面切开肝实质进路，可以显露和切开右肝内各叶段胆管。
This machine adopts the best advanced imported frequency conversion timing controlled technical drive . it adopts dlectrical brake setting , its deendability is lofty and cutting is exact . this machine is mostly used for many quadrate foam rubber once flatly slicing . it can be continuously cutout , and do not recede cutter , the production efficiency is better 70型采用当前最先进的进口变频调速技术驱动，去除落后的抱闸刹车装置，可靠性高，切割精确，本机主要用于多个方泡泡绵的一次性水平切片工作，连续切割，不用退刀，生产效率更高。
On the basis of analysis on the pairwise action of cement paste , nanometer silica fume and clay , the paper proposes the reinforcement mechanism of the cemented soil stabilized with nanometer silica fume . the reinforcement mechanism includes cementation action of cement hydrate , ionic exchange and quadrate reaction of clay particle , pozzolanic effect , filling effect and cementation action of nanometer silica fume 在研究水泥浆?纳米硅粉、纳米硅粉?粘性土、水泥浆?粘性土相互作用的基础上，将纳米硅粉水泥土的固化机理总结为：水泥水化物的胶结作用、粘土颗粒中的离子交换效应和“二次反应” 、纳米硅粉的火山灰效应、纳米硅粉的填充效应、纳米硅粉的胶结作用。
The growth dynamics of tree basal area of form . taxus chinensis var . mairei population in different altitude were discussed using the liu - logistic model , and the results showed that the altutide of 790 meters is more suitable to the survive of form . toms chinensis var . mairei population than 990 meters . plot sampling was selected and dynamic analysis was used to study the height structure of taxus chinensis var . mairei population , and the quadrate picture of height structure and the curve of survival rate were drew 运用改进模型对南方红豆杉种群在不同海拔梯度的种群优势度增长进行了探讨，表明海拔790m处的南方红豆杉具有较大的环境容纳量，但增长速度不快，海拔990m处的南方红豆杉种群环境容纳量不高，但具有较大的增长速度，这可能与群落的发育阶段不同有关，两地海拔均为南方红豆杉适宜的生长海拔高度，相比而言，海拔790m的珍稀濒危植物南方红豆杉种群数量特征的研究高度更宜于南方红豆杉种群的生长。
Currently , top - grade and middle - grade dishware produced by our enterprise include changfa brand product series , such as flat quadrate dish , thickened applique quadrate dish , deepened quadrate dish , snack dish . milk boiler . high boiler , steaming boiler , thickened double - handle tripod caldron , deepened flat - bottomed tripod caldron , luxurious bakelite frying tripod caldron , luxurious double - bottom frying pan and cover for tripod caldron 目前企业生产的中高档餐具有“长发”牌浅方盘、特厚贴花方盘、深方盘、快餐盘、奶锅、高锅、蒸锅、味斗、特厚味斗、物斗、加厚双耳鼎、特深平底鼎、豪华电木炒鼎、豪华双复底炒锅、鼎盖等系列产品。
The student said " hello " to all of us when we met him . he was thin and his face was black , seems that he was undernourished . his father brushed the chairs with his sleeves immediately , asked us to sit down . his mother leaned the door with foolish smile all the time . it was even poorer of their family than our thought . the lime had started to come off as the wind and rain damage , the sunshine got through their house , shadow was remained on the sap of floor . two small rooms , a kitchen , a quadrate desk and some chairs here , there were not anything else ; the other one was bedroom , two beds were squeezed together . the bedding wasn ' t new any more and turned white , cotton was come out from the clothes . the only thing was what one old desk was cleaned well , it should be his book desk , there were some books on it 那位学生见我们来了,高兴地向我们问好.他看上去瘦瘦的,脸色黝黑,一副严重营养不良的样子.他的父亲赶紧用袖子在长凳上擦拭了几下,笨拙地端给我们坐.他的母亲一直倚着门槛傻傻地笑.他的家比我想像的更穷.墙面上的石灰经不起风雨的侵蚀而纷纷脱落,阳光透过砖缝射进屋里来,在坑坑洼洼的地面上留下一个个斑驳的影子.两间小屋,一间是灶间,除了一张方桌和几张长板凳外,别无他物;另一间是卧室,两张床挤在一起,被褥旧得发白,垫被连棉絮都露在外面.唯一整理的井井有条的是一张旧桌子,应该是他的书桌吧,上面整整齐齐放着几本书
