其原理是，不同的脑电图描记器读数来自受试者的回忆而不只是了解一件事。

The theory is that a different EEG reading comes from a subject remembering rather than merely knowing an event.

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并通过实验证明：该仪器原理先进，操作简单，可自动读数，具有较高的测量精度。

Experiment show that the instrument have advance principle, operated simply, read number automatically and high measurement accuracy.

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该方法基于共轴球面光学系统的成像原理，通过读数显微镜对吸入待测液体后毛细管的焦点位置进行单一参数的测量，进而计算出待测液体的折射率。

The refractive index was obtained through measuring the focal position of a capillary filled with the liquid by a reading microscope, and doing a calculation with an analytic formula.

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