The fluoride concentration in the trapping solution is determined directly in the diffusion dish, after neutralization and buffering with a fluoride-sensitive electrode.
采用氟化物敏感电极，经中和和缓冲，在扩散盘中可直接测得捕集溶液中的氟化物浓度。
The acid buffering capacity of birch veneer decreased by dyeing directly and increased by dyeing after pretreating with NaOH solution.
桦木单板直接染色酸缓冲容量减小，而预处理后染色则酸缓冲容量增大。
The acid buffering capacity of birch veneer decreased by dyeing directly and increased by dyeing after pretreating with NaOH solution.
桦木单板直接染色酸缓冲容量减小，而预处理后染色则酸缓冲容量增大。
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