...根雕|玉器|紫砂|收藏 声音分析之生物学介量,如时间结构之唧声(chirp, C)、长唧声(trill pulse, TP)以及脉冲比(pulse ratio, PR);Dumortier(1963)说明声音时间结构(temporal structure of sou...
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结果 ①EP2的激动剂Butaprost增强海马齿状回突触传递和降低双脉冲比(paired-pulse ratio, PPR),此效应被EP2的拮抗剂AH6809所阻断。
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结果 ①EP2的激动剂Butaprost增强海马齿状回突触传递和降低双脉冲比(paired-pulse ratio, PPR),此效应被EP2的拮抗剂AH6809所阻断。
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马达的脉冲比基于第一开关频率计算。
A pulse ratio of the motor is calculated based on the first switching frequency.
如果所计算的脉冲比小于第一脉冲比值且大于第二脉冲比值,该至少一个开关以第二开关频率操作。
The at least one switch is operated at a second switching frequency if the calculated pulse ratio is less than a first pulse ratio value and greater than a second pulse ratio value.
有些脉冲星表比地球上最精确的时钟还准。
Some pulsars keep time better than the Earth's most accurate clocks.
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