此前等候冬季降温亦不容易。相比上个雪季，吉林长春的冰雪新天地推迟3天开园；贵州的梅花山国际滑雪场，更是推迟18天才正式开板。还有位于哈尔滨的一家雪场负责人告诉南方周末记者，开园时间推迟了半个月。
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Just to rule out any issues with the Siglent, even though it had been recently checked against cal standards and was locked to my lab 10 MHz distribution system, I directly measured the 10 MHz outputs from my SRS FS752 GPSDO and my Symmetricom rubidium standard with the ThunderScope. Both showed 10.665 MHz, while in reality they were both 10.0000000000 MHz give or take about 2e-11. So the Siglent was fine, and the ThunderScope’s timebase was 6.6% slower than it should have been.
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IEEE 754 single-precision float。今日热点是该领域的重要参考