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Wu=Wr-W1 Wu=W-Wr Wu=W-W1 Wu=Wr+W1
车速V与轮速wr之比V/wr 轮速wr与车速V之比wr/V 车速V与轮速wr之差与车速之比 轮速rw与车速V这差与轮速之比
where will the match take place where the match will take place when will the match take place when the match will take place
every place the city where the place where wherever
PSEN无效为低电平，WR有效为低电平 PSEN无效为高电平，WR有效为低电平 PSEN有效为低电平，WR无效为高电平 PSEN有效为高电平，WR无效为高电平
RD低电平，WR高电平，M/IO高电平 RD高电平，WR低电平，M/lO高电平 RD低电子，WR高电平，M/IO低电平 RD高电平，WR低电平，M/IO低电平
which ; where where ; where which; which where; which
WR高电平，RD低电平 WR低电平，RD高电平 WR低电平，RD低电平
the place the place where that /
that, the place that, the place where it, the place on which, where
CS=L RD=L，WR=H WR=L，RD=H RD=LWR=L RD=H，WR=H
where will the match take place where the match will take place when will the match take place when the match will take place
in the place where in place in which the place where what
where will the Youth Olympic Games take place when will the Youth Olympic Games take place where the Youth Olympic Games will take place when the Youth Olympic Games will take place
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