a drill for cutting circular holes around a center
a surgical instrument used to remove sections of bone from the skull 同义词：trephine,
cut a hole with a trepan, as in surgery
例句与用法
1.
Trepan - formed perforator 圆钻形穿孔器
2.
Dermal trepanning forceps 皮打眼钳
3.
In view of cost , practicability and maneuverability , the special sintering diamond trepanning drill was developed for drilling ceramic composite components originally 根据复合构件加工中的各种缺陷，分析了采用预压应力钻削对改善表面加工质量的重要性。
4.
Accoding to experiment , found that trepanning can obtain the holes of little taper , high roundness , using laser drilling of nearby the last energy threshold gained the holes of high quality 最终得出:在工件上打大孔径的孔时,采用旋切打孔的方法可以得到了圆度高、锥度小的孔质量。
5.
Methods : clinical data of 32 cases of patients with complicated posterior urethral stricture treated by the trepanning appliance and the 21 cases by common operation were retrospectively reviewed 方法：在对32例复杂性后尿道狭窄患者行开放性手术中，使用后尿道钻孔器钻孔（钻孔器组） ，并与21例常规后尿道钻孔的疗效进行对比。
6.
This laser poss characteristic : t he output power attains 500w ; laser energy instability less than 2 % ; laser radiation angle : about 3 . 5mrad . design a sort of new - style laser cutting head , using this equipment can carry out trepanning and percussion drilling processing 这台激光器所达到的参数为:输出功率达到500w ;激光能量不稳定度: < 2 % ;激光的发散角: 3 . 5mrad 。
7.
I used to work him so with my socratic method , and had trepanned him so often by questions apparently so distant from any point we had in hand , vet by degrees leading to the point , and bringing him into difficulties and contradictions , that at last he grew ridiculously cautious , and would hardly answer me the most common question , without asking first , " what do you intend to infer from that ? 我常用苏格拉底法和他争辩，常使他陷入圈套，起先我以离主题甚远的问题来回答他，接著一步步地引到主题，遂使他陷于窘迫或矛盾，直到后来他产生一种可笑的心态，这种普通的问题也不难于回答，先要问我，这句话你要困窘我到什麽程度呢？
您当前位置：