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实验室中您经常必须对试剂进行精确的称重。 高精度的电子天平可以精确到万分之一克。 因此, 常采用花岗岩作底垫防止振动。 并做成玻璃罩子避免微风的干扰 。
in a laboratory, very precise quantities of reagents often have to be weighed out. high precision scales can measure masses down to 1/ 10000 gram. as such, they stand on granite blocks to avoid vibrations and are protected against changes in airflow by a dome.
最后更新: 2011-10-23
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