置换

The mid-position clamping and continuous single side cerebral complagia is effective method to protect the brain function in the operation of aortic arch replacement.

中位阻断主动脉连续单侧脑灌注在全主动脉弓置换手术中可以起到较好的脑保护效果。

Objective To study the brain function protection effect of mid-position clamping of aortic arch and parallel circulation in the entire arch replacement surgery.

作者：张建卿程兆云顾以茼肖明第目的探讨在全主动脉弓置换手术中采用中位阻断主动脉连续单侧脑灌注对脑功能的保护效果。

Zhang Yexing should be the man having seen the "Sun" already.

张业兴应该是看到过&太阳&的人，他回到了&洞穴&里面，&洞穴&被他置换成了&剧场&。

Xanthan polymers enhance oil recovery by improving water flooding and the displacement of oil.

黄元胶通过增加水的涌入量并置换出油的方式提高油的回收率。

Objective To study variation of plasma warfarin concentration and its clinical significance in patients with heart valve replacement.

目的 探讨心瓣膜置换术后血浆华法林浓度的动态变化及其临床意义。

To investigate the use of warfarin sodium after mechanical heart valve replacement.

目的 研究心脏机械瓣膜置换术后华法林钠的应用。

Hydrogen always has valence 1, so other elements' valences equal the number of hydrogen atom s they combine with.

元素的特征价数是以该元素一个原子可结合的氢原子数或可从一化合物中置换出的氢原子数来表示。

The ligand was used to prepare for a series of its transition metal complexes by the replacement reaction with metal salts.

并用该杂原子大环配体与过渡金属的盐进行置换反应，合成了相应金属：Ni、Cu、Co、Zn和Cd的大环配合物。

The peoples governments at all levels and relevant functional departments shall do a good job step by step in the work of employment arrangement, social security and change of vehicles, safeguard the legitimate rights and interests of the disabled people according to law, and strengthen the administration of motor tricars.

各级人民政府和有关职能部门，应当有步骤地做好安置就业、社会保障和车辆置换的工作，依法保障残疾人的合法权益，加强对有动力装置的三轮车的管理。

Transposon system is easy to manipulate,quick and can achieve high throughp...

此外，进退策略、双置换法、标记和交换法、重组酶介导的盒子交换法也从不同方向发展了基因敲除技术。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。