我爱胡媚娘 (step up step down) 作为一个6年得苹果用户但是常年在国外读书得人来说 苹果无可取代 尽管我也只是用来看电影听歌上网聊天做文档ppt等等
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step-up step-down transformer 升或降变压器
step up and step down 加强与下台 ; 加强和下台
step down-step up 样下降 ; 上升现象
Comparing to step-down resonant switched capacitor(RSC) converter, the composing principle of step-up RSC converter is different, so their sneak circuit conditions are not same.
相对于降压式谐振开关电容变换器,升压式谐振开关电容变换器构成方式不同,潜电路发生条件也有较大区别。
Adopting PLC special function block technology, it is easy to realize to adjust up step or down step of electronic beam current.
利用PLC的特殊功能模块技术,较好地实现了电子束流的上升梯度和下降梯度的方便调节。
The ambiguity function of step frequency coded signal is discussed. An up-down step frequency coded signal waveform is designed with its processing method.
本文讨论了步进频率编码信号的模糊函数,提出了一种正负步进频率编码信号及其处理方法。
Wrapping up his defense testimony, Mr.Taylor said he agreed to step down as Liberian president in 2003 in the interest of peace but was tricked by the international community.
VOA: standard.2009.11.10
The first step to insight is to ask questions like why do things fall down and not up?
起初的洞察力是问问题,为什么物体坠地而不是上升?
And if you hear a triple, your step is this: down-up-up, down-up-up, down-up-up, down-up-up.
听到三拍子时,这样做,强,弱,弱
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