如果您想打出去，要先拨“o”号键。写字台上有一个电话簿，可供您参考。
If you want to make an outside call, please dial "o" first. There is a telephone directory on the writing desk. You may read it.
此方案把第一个锁相环(PLL1)的输出作为DDS的参考信号，再用DDS的输出去激励第二个锁相环(PLL2)。
In this scheme, the output of the first phase-locked loop (PLL1) ACTS as the reference of DDS, and then the output of DDS stimulates the second phase-locked loop (PLL2).
【参考译文】青少年一参加工作就应该被父母要求搬出去住吗？
Should teenagers be asked to move out when they start working?
【参考译文】青少年一参加工作就应该被父母要求搬出去住吗？
Should teenagers be asked to move out when they start working?
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