额钻,mini-trephination of the frontal sinus
1)mini-trephination of the frontal sinus额钻
英文短句/例句

1.Method Comparison of Artificial Frontal Drill and XPS Frontal Drill手摇额钻与XPS额钻使用方法的比较
2.Intension and extension of bored piles part in budgetary rating of new bridges and culverts;新桥涵预算定额钻孔桩部分的内涵与外延
3.Tiny beads of sweat began to appear on his forehead.细的汗珠从他额角上钻出来了。
4.Safety Analysis of Frontal Minitrephination in Endoscopic Frontal Sinus Surgery鼻内镜术中额窦微钻应用的安全性分析
5.Application of intracranial hematoma microneurosurgery by trephine-openning skull环钻开颅在额部颅内血肿微创手术中的应用
6.A 377 percent tariff caused imports to dip for a while until shippers found a loophole.377%的关税使进口额一度下降.但出口商很快找到空子可钻。
7.The scar cut by the diamond on his white, bald, shining forehead, made a burning red mark.他的光秃秃的前额又白又亮,从前给金钢钻割破的地方结成一条血红的疤。
8."Like a diamond harder than rock I have made your brow: have no fear of them and do not be overcome by their looks, for they are an uncontrolled people."我使你的额像金钢钻,比火石更硬。他们虽是悖逆之家,你不要怕他们,也不要因他们的脸色惊惶。
9.unit-type drill head组合钻床钻头, 标准钻头
10.To bore(a shaft) with a trepan.钻用钻井机钻(矿井)
11.offshore drilling海底钻探;海上钻井;海上钻探;海洋钻井;海洋钻探;近海钻探;滨外钻探
12.aggregate limit(配额的) 总限额
13.considerable [little] savings高额 [小额] 储金
14.a high [low] dividend高额 [低额] 股息
15.high-thrust drill强力钻机,高推力钻机
16.kelly for well-drilling machiens旋转钻孔,钻井机用
17.tap(ping) drill螺丝孔钻,螺丝底孔钻
18.combination center drill组合中心钻,复合中心钻
相关短句/例句

rated drilling depth额定钻深
3)XPS frontal drillXPS额钻
1.Objective To introduce the equipments, application methodology, procedure of artificial frontal drill and XPS frontal drill, and discuss the difference, advantages and disadvantages of them in the endoscopic frontal sinus surgery.目的:介绍手摇额钻与XPS额钻的设备、使用方法、操作步骤;比较两种额钻在鼻内镜额窦开放手术中应用的区别及优缺点。
4)trepanation of frontal sinus额窦环钻术;额窦钻孔术
5)Forehead[英]['f?:hed][美]['f?r'h?d]额
1.Results Among 6 patients who were treated with lateral forehead flap, complete success was obtained in 4, partial necrosis occurred in one, complete failure occurred in one.目的 探讨额部肌皮瓣在鼻部缺损中的应用。
6)Cobalt[英]['k??b?:lt][美]['kob?lt]钻
延伸阅读

刀具:深孔钻 专门用於加工深孔的钻头。在机械加工中通常把孔深与孔径之比大於6的孔称为深孔。深孔钻削时﹐散热和排屑困难﹐且因钻杆细长而刚性差﹐易產生弯曲和振动。一般都要藉助压力冷却系统解决冷却和排屑问题。深孔钻按排屑方式分为外排屑和内排屑两类。外排屑的有枪钻﹑深孔扁钻和深孔麻花钻等﹔内排屑的因所用的加工系统不同﹐分BTA(Boring and Trepanning Association)深孔钻﹑喷射钻和DF(double feeder)深孔钻3种(见图 几种不同的深孔钻 )。枪钻﹕只有一个切削部分﹐最早用於加工枪管。钻削时﹐切削液从钻杆中间进入﹐经钻头头部的小孔喷射到切削区﹐然后带著切屑从钻头的V形沟槽中排出。枪钻适用於加工孔径2~20毫米﹑孔深与孔径之比大於100的深孔。BTA深孔钻﹕切削液从钻杆与孔壁的间隙处送入﹐靠切削液的压力将切屑从钻杆的内孔中排出。BTA深孔钻适用於钻削孔径6毫米以上﹐孔深与孔径之比小於100的深孔﹐其生產效率比枪钻高3倍以上。喷射钻﹕一种多刃内排屑深孔钻﹐有内﹑外两层钻管﹐大部分切削液从内﹑外钻管的间隙中进入切削区﹐然后连同切屑进入内管﹔另一小部分切削液则经由内管尾端的月牙形孔进入内管﹐產生喷射效应﹐形成低压区﹐帮助抽吸切屑。喷射钻不要求严格的切削液密封装置﹐适用於钻削直径18毫米以上﹑孔深和孔径比小於100的深孔。DF深孔钻﹕这种钻头吸收了BTA深孔钻和喷射钻的优点﹐採用单管﹐排屑靠推压和抽吸双重作用﹐提高了排屑能力﹐可钻削孔径在8毫米以上的深孔。 枪钻常用高速钢或硬质合金製造。各类内排屑深孔钻可根据尺寸大小﹐採用焊接或机械夹固式可转位硬质合金刀片的结构。深孔钻上的导向块起导向和定心作用﹐减少钻孔的偏斜和切削时的振动。深孔钻的刀齿和导向块的布置主要考虑分屑和切削时径向力的平衡。刀体与钻杆可用焊接或方牙螺纹联接。