结果表明，电子天平计量法可以将吸管加入溶液体积的计量精度提高2个数量级，从而大大提高了工作曲线的准确性和线性。
It showed that precision of volume was improved hundredfold by electron balance method and thus the accuracy and linearity of the work curve was improved greatly.
数显恒温测速磁力搅拌器 操作简便，无级调速，能在较广的速度范围内对液体溶液进行精密稳定的搅拌，特别适合小体积样品的试验。
Magnetism Msier is operated easily, non scale changes speed, can mix liquid precisely and stably in mide speed range, especially fit little samples experiments.
集热式恒温磁力搅拌器 操作简便，无级调速，能在较广的速度范围内对液体溶液进行精密稳定的搅拌，特别适合小体积样品的试验。
Magnetism Msier is operated easily, non scale changes speed, can mix liquid preciselystably in mide speed range, especially fit little samples experiments.
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