替换

Retrahedrons O-Al4 and O-Fe4 exist in the Shandong sapphire, while other Tetrahedrons such as O-Al3Fe, O-Al2Fe2 and O-AlFe3 may also exist.

研究表明，山东蓝宝石中Fe主要是以Fe~(3+)的形式存在的；Fe含量的周期性变化主要表现为Fe~(3+)含量的周期性变化；而在蓝宝石中，Fe主要是以类质同象的形式替换Al而进入刚玉晶格的，在刚玉晶格中存在着O-Al_4，和O-Fe_4的结构格式，也极有可能存在着二者的几个过渡型分子结构如O-Al_3Fe，O-Al_2Fe_2及O-AlFe_3。

The thatched roof is an essential part of the attraction of the English countryside.

essential（意思是必要的，不可缺少的，）对应问题中的unique属于同义替换。

This innovative technology unloads a majority of the flywheel's weight from the field-replaceable mechanical bearing cartridge.

这个创新的技术从磁场替换机械**筒，摆脱了大部分飞轮重力。

Consequently, with the assistance of all kinds of media, news combining with the target of celebrities often promotes upsurges that can't be easily oppressed and forms on-changing phenomena of news consumption.

在众多管道媒体的推波助澜下，与名人结合的相关消费新闻资讯常延烧出一波波一时难以扼抑的热潮，形成不断更迭替换的新闻消费现象。

The country has been on a political pendulum and has vacillated between civilian and military rule for many years.

多年以来，泰国一直政局不稳，政权在文官和军人间替换更迭。最新的抗议活动正凸显了泰国社会的矛盾。

Keli De will air on the use of ammonia cylinder valve Rotarex 300 to replace all the valves, valve quality assurance.

科利德将液空使用的氨气钢瓶阀门全部替换为Rotarex 300的阀门，保证阀门质量。

Much of the installed base of pressure transmitters needs to be upgraded to leverage PAM applications, representing a huge opportunity for suppliers to replace existing conventional transmitters with smart units," according to Analyst Allen Avery, the principal author of ARC's "Pressure Transmitter Worldwide Outlook.

ARC&全球压力传送器前景&报告的主要作者、研究员Allen Avery表示：&大部分安装了压力传送器的工厂需要升级以促进PAM应用，这对供应商而言代表了一个替换现有传统传送器为智能传送器的巨大商机。&

The average time of extracorporeal circulation was 172 minutes and the average time of clamping ascending aorta was 116 minutes.

目的 探索重症瓣膜替换术体外循环管理和心肌保护的方法。

7 A direct plug-in unit that resembles an attachment plug of a power supply cord shall be plainly marked with the word \"CAUTION\" and the following or the equivalent : \"Do not replace this plug assembly as a risk of fire or electric shock may result \"."

&49.2.7 一个直插式电源单元类似带电源线的附加插头，应明显地标识&注意&，随后标上&不许替换此插头组装，以免触电或着火&或同意义的字样。&

Three Growlers are assigned to Tactical Electronic Attack Squadron 129, the fleet replacement squadron at NAS Whidbey Island, Wash., Brown said.

3架咆哮者分配至战术电子攻击第129中队，替换了NAS Whidbey岛的机型。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。