1. To observe mosquito larva density degression rate , both hydrophytes and fishes death rate.
同时观察水生植物和鱼类的死亡等影响因素.
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2. Landscape fragmentation is one of the major reasons drastic degression loss of biodiversity over the world.
景观破碎化是生物多样性下降的最主要的原因之一.
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3. PD's clinical characters are thrillingness, muscle rigidity , bradykinesia and the degression of independence ability.
其临床特征为震颤 、 强直、运动迟缓以及自主能力的下降.
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用作名词 (n.)
It is the reason of the adsorption capacity degression that the residual adsorption capacity is relatively more in the desorption process by water. 洗涤脱附过程中残留吸附容量较大是活性炭吸附容量下降的根本原因。
