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The instrument the doctor USES to measure pressure is called a tonometer.
医生测量眼压使用的仪器叫做眼压仪。
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The tonometer 's position being strictly vertical the sound signal stops .
眼压仪处于完全垂直位置时声音信号停止。
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The tonometer 's position being strictly vertical the sound signal stops .
眼压仪处于完全垂直位置时声音信号停止。
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