脉序有2种意思：1. 叶脉的分布形式，可分为平行脉、网状脉和射出脉三大类型；2. 又称脉相，是昆虫翅脉在翅面上的分支与排列形式。脉序因昆虫的种类不同而变异颇大，为昆虫分类的重要依据之一。
misc. nervature ; nervulation ; nervuration
分析了出土古脉书在脉名的选择与脉序的安排上，受到了三部九候说的影响。
It further points out that the arrangement of channel order, and selection of channel title were all influenced by the theory of "Three Parts with Nine Palpation Sites".
L 297芯片产生脉宽可调的脉冲相序信号，该信号作为双极性桥式功率驱动电路的输入信号，放大后驱动步进电机。
L297 chip generates pulse phase sequence signals of which the pulse width is adjustable. The signals are the input ones of dual bridge driving circuit and drive the stepper motor after amplification.
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