v*****r
发帖数: 2325 | 1 agree. powerful explosive moves is definitely at top tier of atheleticsm/
fitness.
it but requires much higher level techniques and adequate level of max
strength to hold proper posture, also harder to manage the training intensity. which means high level of risk of injury.
because with ballistic move, even a medium meight during slow move can often
create 1RM situation for a person during fast move.
eccentric(negative) moves cause more muscle strain, and delayed onset
soreness. that's why I s... 阅读全帖 |
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h******d
发帖数: 4761 | 2 我只找到这个， 但是还是看不太明白。
比如：
1.
142 privacy + 143 group codes， 这个是什么意思？怎么用呀。
2.
还有在山上看到有些老美用的那种可以有中转的是什么手台呀，
就是那种可以说：土豆土豆我是洋芋我是洋芋，请接白菜请接白菜，然后洋芋就可以直
接跟白菜讲话的那种。
3.
还有一般在南加州爬山一般多大距离的够用呢，22MILE，36mile.
俺的想法其实很简单，也就想万一有状况可以呼的到人来救命（这个最重要！！！！！
）。
兼求推荐。
谢谢！
VHF, UHF, CB, FRS GMRS Definitions
OK, just to try and break down the various names and what frequency they
broadcast at, this is by no means a technical paper just to give a quick
reference and the power that the different equipment is capable of. I w... 阅读全帖 |
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p******f
发帖数: 162 | 3 fflus() just sends the data to OS buffer, as white(), it does not touch
phisical hard disk.
as wien suggested, some systems are doing background fsync at about 30
sec frequency, if you feel you can't afford 30 second data lost, you
at do a fsync every 10, or 5 or 1 seconds. adjust the intervals to find
the best frquency.
BTW, are you worring about application crash or OS crash, IIRC, the data
in OS buffer will not lost even if your application crashed.
maybe, your concern is data integrity, the |
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k******t
发帖数: 28 | 4 extending from 9KHz to 3000GHz (wavelength 0.1mm~33km),
RF refers to frquencies with which an electromagnetic
field is generated suitable for wireless braodcasting
and communication.
AF(audio freq.) covers from 20Hz~20KHz however. |
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m*****t
发帖数: 3477 | 5 to simplify my question:
If you plot the output noise current power spectre, the corner frquency is
much higher than that of the equivalent input noise voltage power spectre.
why is that?
amplif
这时 |
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m*****t
发帖数: 3477 | 6 That's the point.
One student from Berkely simulate output noise using our model and complain
the "noise corner frquency"(where the slop turn to flat) is too high.
I believe he mistaked the input noise corner (KHz) with the output noise
spectrum.
He/She should simulate input refeerd noise, where you set Vd as noise source
and prob the noise at G. I want to confirm that. |
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m*****t
发帖数: 3477 | 7 It's a range, different technologies will give you different corner frquency
. |
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