moving-average orders 滑动平均阶数
Passphrases are, on average, several orders of magnitude harder to crack than passwords.
ECONOMIST: Online security
They should examine rate of flow, average time between orders, balance between buy and sell orders, and order sizes, to determine whether the order flow has become anomalous.
FORBES: After the Knight Capital Catastrophe, Throttle the Traders, Not the Markets
So our average latency, for orders coming in and out of our system, ranges between 250 and 350 microseconds.
FORBES: Painting With The High-Frequency Brush
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