求翻译：在测量时，缠缚袖带要平展，使上臂、心脏和水银检压计的零点(或弹簧检压计)，尽量保持在同一水平上，并且放气不要过快，否则将出现较大的误差。是什么意思？

Chan Fu cuff in the measurement to be flat, the upper arm, heart, and mercury check pressure meter zero (or spring check pressure meter), try to keep on the same level, and deflated is not too fast, otherwise it will appear larger errors.

When measured in cuffs, and wrapped around the upper arm to be flat, the heart and the mercury test pressure gauge the zero point (or spring test pressure gauge) and try to keep at the same level, and do not bleed too fast, or else there may be a larger error.

When survey, shackles the sleeve belt to have to be flat and smooth, causes the upper arm, the heart and the mercury manometu zero (or spring manometu), maintains as far as possible in the identical level, and the deflation do not have excessively quickly, otherwise will appear the big error.

At the time of measurement, wrap tie cuffs to flatten, make the upper arm, chest, and mercury manometer zero (or spring manometer), try to keep it on the same level, and not too quickly, or a larger error will occur.

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