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。
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