从3名骨科,4名脑外科和5名内科医生中选派5人组成一个抗震救灾医疗小组

仅供参考:
orthopedic surgeons 骨科医生
orthopedic{医{形容词}整形外科的
surgeons {名词}外科医生

首先 你的算法可定不对 有重复 比如3位骨科ABC
你先选了A,你在9选2的时候选了C,和你先保证C,在选A肯定是重复了
正确的解法 C(12,5)全选法,C(7,5)没有内科医生,C(8,5)没有脑外科医生,C(9,5)没有骨科医生
但是没有脑外科医生,没有骨科医生,两者重复算了一个只有内科医生的情况,加上1
C(12,5)-C(7,5)-C(8,5)-C(9,5)+1
=792-21-56-126+1
=590

AO是“国际内固定研究学会”的筒写.
它是1958成立于瑞士达沃斯,是世界最权威性的骨科研究机构.AO内固定就是术前详细阅读X光片,术中仔细复位,减少对组织的二次创伤,选择合适的钢板做内固定,尽量重建骨折端的生理、力学结构,达到坚强的固定.AO的理论是现在骨科手术的参考,《AO内固定技术》与《坎贝尔手术学》同成为骨科大夫术前必看的工具书.

骨折
fracture of bones
西医
western medicine

很简单,你重复了,举个例子你就知道了,设骨科医生为1,2,3脑科为4,5,6,7内科为8,9,10,11,12,依照你的方法我们先取1,4,8再取2,3满足条件了吧,那么我们先取2,4,8再取1,3是不是也满足你的条件?但是这两组是完全一样的,都是1,2,3,4,8.你的方法不能区分,所以是不对的.

骨科：Orthopedic surgery
脑外科：Brain Surgery、Neurosurgery

Orthopedic traction bed by bed and pose a stent can be conducted next backplane pack bed before dumping,dumping reversing,the frame legs,feet frame packs.Action item legs,legs foot frame to frame,feet together on the Folding Box ≥ 36 ° with physical frame outreach ≥ 25 ° angle throughout the bed up in peacetime should be smooth,There can be sloshing inequality.Bed before dumping,dumping reversing swing and the amount shall not be greater than 14 mm back frame,frame legs,feet frame between the height difference.shall not be greater than 4 mm.Swing back longitudinal frame shall not be greater than 16 mm.Lateral swinging back frame shall not be greater than 5 mm.Leg foot box frame with the vertical swinging shall not be greater than 16 mm.Turn back pack frame,handle starting torque shall not be greater than 3.4 fixation.Frame pack switch legs,butt starting torque shall not be greater than three fixation.Bed up in peacetime,the back end of the first frame 1 / 2 position,the downward force exerted 245N,legs,feet frame should not sitting with the phenomenon.Background Frame,frame legs and feet in the regulatory framework within movements should be smooth and without significant jitter and noise and other anomalies.the drive must not have permanent deformation.Scroll Lock is splayed,feet legs box frame were starting outreach rotary power of not more than 98 N.Locking wheel locking device,the frame legs foot frame outreach rotary power with no less than 78.4 N.From the cantilever boom in the first 600-mm vertical downward force exerted 392 N,cantilevered bar may not have permanent deformation.In the side of the frame is arbitrary vertical downward force exerted 980 N,the other side should not be sitting with the phenomenon.Hand bracket for (for the 83-bed orthopedic) :to shore up the hands shelves uniform 50 N static load,hand bracket for ptosis distance of not more than 30 mm,the removal of the load,should be able to place.Handle components :Chain of ouch,Festival and the Festival of fastness should be not less than 294 N Rally.Rally Central Wang Pin of shear force should be not less than 294 N.Related departments should be able to adjust length.Traction rod components :traction rod straight and should have sufficient mechanical strength and rigidity.Lock Locking devices should be reliable,solid,open cooperation,Lock should be flexible light.In traction poles flying 200 N mallets,the traction bar phenomenon is allowed to slide.Mallets should be smooth and level,weight,and in each of the mallets on the plane marked with the actual weight of a heavy hammer markings.Component parts to the quantity and species should be consistent with the provisions of Table 4,all accessories should facilitate the demolition,Lock should be reliable,and hard solid and durable.Orthopedic traction bed in a flat cement surface movement,rotating rack should be flexible,reliable Lock.Face-bed surface should be smooth and not a serious hurt,and none Kok phenomenon

手术使用设备Surgical Equipment
放射治疗设备 Radiotherapy Equipment
骨科设备 Orthopaedic Surgery Equipment
急救设备 First Aid Equipment