Partly, they're a form of displacement activity; partly, they give me a series of tiny, self-affirmatory lifts.

一方面是因为，它们成为了一种替代活动；另一方面，他们给予我一系列自我满足的成就感。

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That displacement is measured with a laser beam to create a series of 2-d images of the sample, which are combined to generate a 3-d image.

然后用一束激光来测量这个摆动的位移，并由此生成一系列此样本的二维影像，再由这个生成其三维影像。

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For displacement resonator, although exact solution can't be obtained by using series method, yet it can be obtained through this method.

而对位移谐振子，用级数方法无法得到精确解，也可用本方法求得精确显式解。

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