发布时间:2025-02-07 18:49:47
1、水银血压计。用三通管同时连通水银和电子血压计。看读数是否相近。
2、如是电子血压计,返回厂家用厂家机器进行校对
3、水银血压计每年需要到相关部门进行水银校准。
无论什么血压计都无法自己在家校准。国家标准为正负5个毫米汞柱。在这个范围内就是准确的。
我的3dmax选择几个点时有时候会多选想去掉不知道按什么快捷键能去掉或增加选择
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