A mirage is an optical illusion.
海市蜃楼是一种视错觉。
A kaleidoscope is an optical toy.
万花筒是一种光学玩具。
这是个视觉的假象。
A microscope is an optical instrument.
显微镜是光学仪器。
But the scene is actually an optical illusion.
而事实上，这样的场景只是一种光学错觉。
I have to find an optical shop to fix my glasses.
我必须找一家眼镜店来修理我的眼镜。
You can also go to an optical shop for such a service.
你亦可到眼镜店查询此项服务。
I think I saw a ghost but it was just an optical illusion.
我以为我看见鬼了，其实只是一种。
I thought I saw a ghost but it was just an optical illusion.
我以为我看见鬼了，其实只是一种幻觉。
In the second, an optical imaging system is designed and made.
其次，设计和实现了一种光学成像系统。
GPON is an optical access technology with development potential.
GPON是一种很有发展潜力的光接入技术。
The light guide device comprises an optical plate and a diffuser.
该导光装置包括光学板和透光罩。
It's probably nothing but an optical illusion remember the Face on Mars?
也许他什么也不是，只是一种错觉还记得火星上的神秘人脸吗？
Invisibility is an optical illusion that the object or person is not there.
所谓的隐形是一种视觉幻象，使人认为物体或者人不在那里。
The two major components are: a mechanical drive system and an optical system.
两个主要部件为：一是机械传动系统，另一个部件为光学系统。
Though the rays appear to be emanating from the cloud, that is an optical illusion.
虽然乍看上去，光线似乎是由云层发出的，但实际上这只是一种光学假象。
They create an optical illusion that the Mint hopes is almost impossible to duplicate.
他们有一种错觉，造币厂觉得这几乎是不可能复制的。
The performance of a preamplifier has great effect on the performance of an optical receiver.
作为光接收机的关键部分，前置放大器的性能在很大程度上决定了整个光接收机的性能。
White light interference is an extremely powerful method of optical measurements.
白光扫描干涉测量是光学测量中一种非常重要的方法。
Optical label technology is an important technology to realize optical packet switch.
光标记技术是一种实现光分组交换的重要技术。
An external optical drive can be the resolution to the problem, that's for sure.
外置光驱可以解决的问题，这是肯定的。
The optical diameter is an important factor to affect the visual quality postoperatively.
光学区设计也是影响术后视觉质量重要的因素；
The collimator is an important equipment for optical experiment and standardization.
平行光管是光学实验及计量检测的重要设备。
Image stabilizing system is an important part of dynamic optical system.
稳像系统是动态光学系统的重要组成部分。
The optical system is an important part of star sensors.
光学系统是星敏感器的重要组成部分。
Optical Transmission unit, which is an important sub-function unit of OADM device and OXC device.
光信号转发单元，是光传送网设备OADM和OXC的重要组成部分。
Utilizing all optical switches is an effective method to solve the problem.
全关开关是解决这个问题的一个有效手段。
Utilizing all optical switches is an effective method to solve the problem.
全关开关是解决这个问题的一个有效手段。
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