减小量化误差,需增大计数值N,而增大闸门时间Ts或者在相同的闸门时间内测量较低的频率可得到较大的N。
查看答案
When do we have the World Water Day?What’s the purpose of the special day?
Do you know any quotation or proverb about environmental protection? please make a list of it .(at least 3).
Theme in 2015 is ___________________.
Theme in 2016 is Better Water, Better Jobs.To ___________ the correlation between water and job creation, both directly and indirectly, by water sources around the globe.To highlight how an abundance of quality water can change people's jobs and lives for the better.