Visual biofeedback trainers allow professionals and their patients to see as well as measure their contractions, thus helping them gauge their progress.

通过可视的生物反馈训练器，专业人员和病人可以看到并测量肌肉收缩，帮助测量进度。

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The L Gauge is a reliable swing arm level monitor designed for smaller diameter tanks. It provides a visual indication of the liquid level in your tank.

稳定的摇臂式液位检测器，用于直径较小的水箱。水箱有可见的液位指示。

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Cell-phone conversations and other forms of multitasking may slow down the mental and visual processing required to gauge the distance and speed of oncoming cars, the study suggests.

CNN: Multitasking and crosswalks a risky mix for elderly