他们主要依靠一台高度专业化的蛋品分析仪——哈氏分析仪，那是食品专家雷蒙德·哈夫(Raymond Haugh)在1937年发明的。
To do that, they relied principally on something known as the Haugh unit - a highly specialized egg-quality metric developed by food technologist Raymond Haugh in 1937.
这是第四个与美国宇航局氏大天文台决赛。
港口系统排队模型由两个排队子系统构成。本文对单个泊位(服务台)的情形讨论了它的嵌入马氏链，给出了系统遍历的充分必要条件。
This paper examines port queuing system with single berth. For its imbedded Markov chain, the author gives a necessary and sufficient condition under which the system is ergodic.
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