/,ɪnstə'leɪʃn; ,ɪnstə`leʃən/
n
1 (a) [U]installing or being installed 安装; 设置; 就职
*Installationrequires several days. 安装工程需时数日.
* the installationof the new vice-chancellor 大学校长的就职
* [attrib 作定语] installation costs/charges 安装费.
(b) [C] instance of this 安装; 设置; 就职
*carry out several installations 实施几项安装工程.
2 [C]
(a) that which is installed 安装物; 装置; 设备
*a heating installation 取暖装置.
(b) site housing military equipment 军事设施
*attacking the enemy's missile installations 攻击敌人的导弹设施.

n
[U]
when someone fits a piece of equipment somewhere
　the installation and maintenance of alarm systems
[C]
a piece of equipment that has been fitted in its place
　The whole computer installation was nearly new.
[C]
a place where industrial or military equipment, machinery etc has been put
　nuclear installations
[C]
a piece of modern art which can include objects, light, sound etc
[U]formal
the ceremony of putting someone in an important job or position
　the installation of the new bishop