碳循环是循环中，碳是交换之间的水，大气，生物圈，地圈的地球。
The carbon cycle is the cycle in which carbon is exchanged between the hydrosphere, atmosphere, biosphere, and geosphere of the Earth.
求算了巷道风温恒定时岩体壁面温度、岩体与空气的非稳态热交换系数和围岩调热圈厚度。
The temperature of tunnel wall, coefficient of unsteady heat exchange and thickness of heat-adjusting layer at constant air temperature in a tunnel are calculated.
针对光突发交换网状网中采用逐跳探测的故障监测方法监测成本过高的缺陷，提出了基于探测圈覆盖的故障监测机制。
An economical fault detection method, employing cycle cover theory, is proposed in terms of costly sing-hop test module in meshed optical burst switching(OBS) networks.
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