optional equipment meaning in English

备选设备
补充设备
非标准设备
供选购的设备
任选附加设备
任选设备，附加设备

The picture may show accessories and optional equipment which are not part of stardard specification
图中所示之配件及设备可能不属于标准装备。
The equipment of caring - ambulance is made up of the standard and optional equipment of carrying - ambulance
监护型救护车配置由运送型救护车的标准配置及选装配置组成。
The extensive range of optional equipment includes hydraulically operated drill rod clamps , rotary casing drives and casing oscillators
更大的直径可选装钻杆夹持器,套管驱动器和摇管器