There was a monogram in the corner in which were the initials " R . K . B . "

原来手帕角上有个图案,其中包含着 RKB 三个字母.

飘（部分）

The K - B indicator's color changes sensitively at titration end the color is stable.

提出了用K -B 指示剂法测定水的总硬度,滴定终点指示剂变色敏锐,颜色稳定.

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The definilion of kauri - butanol value and its determination method is described.

文章叙述了“溶剂汽油”一词的由来,K. B.值的定义及测定方法.

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