The bike is in need of replacement.

这辆自行车该更换。

They put all the students through the replacement examination.

他们让所有的学生参加分班考试。

The original furnishings are now in need of replacement.

原来的家具陈设需要更换。

Engineers are still trying to come up with a commercially viable replacement for internal-combustion engines.

工程师在设法造一种在商业上切实可行的发动机来取代内燃机。

Objective To review the experience of surgical treatment of 32 patients underwent heart valve replacement after closed mitral commissurotomy(CMC).

目的报告32例二尖瓣闭式扩张术后再狭窄的治疗经验。

The armour protection is tuneable by the replacement of armour packs within the vehicle's external skin.

防护甲是设计在车辆内衬板里，可以拆换的。

On “Representational Redescription Model”of Children's Development: A Replacement or Rebellion to Piaget's Theory?

儿童发展的“表征重述模型”(RR Model):是一种对皮亚杰理论的反叛吗?

The preparation method of potassium pentaborate (KB5O8) was studied with the replacement reaction between potassium chloride and sodium pentaborate solution.

利用氯化钾晶体和五硼酸钠溶液的复分解反应备五硼酸钾的方法。

Customized ballasts, stable in performance, reliable and durable, make lighting free from stroboflash and save the trouble of frequent replacement.

定镇流器性能稳定，使灯光，并且安全可靠，使用时间长，省却更换烦恼。

Methods Interfixation by crossing kirschners wire,transfixation ligation by steel wire of "8" after replacement of the dislocation of acromioclavicular joint.

肩锁关节脱位整复后采用双重法（交叉克氏针及8字钢丝）固定肩锁关节。

Horacic and lumbar compression fracture replacement device with variable and turritus air-cushion might be a safe, impactful and economical nonoperative treatment.

可调式塔形气垫胸腰段骨折复位器是一种安全、有效、经济的胸腰椎压缩骨折的非手术治疗方法。

Wear particles induced-biological reaction in histiocyte surrounding the prosthesis is an important factor of osteolysis and aseptic loosening after prosthetic replacement.

磨损颗粒诱发假体周围组织细胞产生一系列生物学反应是导致假体周围骨溶解及假体菌性松动的重要因素。

A dental implant is an artificial tooth root that a periodontist places into your jaw to hold a replacement tooth or bridge.

种植牙是一种通过专科医生植入颌骨的人工牙根,用以镶复牙冠或牙桥.

We are hard put to find a replacement for our assistant.

我们很难找到一个人来代替我们的助手。

As Jack is ill, we have to get a replacement for him.

杰克生病, 我们必须找一个人代替他。

We’ve only got two days to find a replacement,so we’re racing against time.

我们只有两天的时间找接替者，所以我们正在抓紧工作。

On August 26, 1900, the Dutch coxed pair suddenly needed a replacement coxswain.A French boy was chosenthe Dutch pair rowed to a close victory.

1900年8月26日，荷兰赛艇队需要一位替补选手，一名法国男孩被选中。

Objective To retrospectively review the experience of mitral valve replacement after mitral commissurotomy in 39 cases.

总结二尖瓣闭式扩张术后行瓣膜置换术的经验。

Use of unauthorized replacement parts may void the warranty. In all cases, US Laser will be the sole judge as to what constitutes warrantable damage.

使用未经批准的可更换部件的保修效。在所有情况下，US激光将唯一判断什么因素构成保修损害。

Polynionic celluloses were preparated by alkalify and etherify of refining cotton.The degree of replacement of the polynionic cellulosesis was high.The radicals of replacement were distributed evenly.

采用精棉经过碱化、醚化得到高取代度且取代基均匀分布的聚阴离子纤维素产品。