“summation principle”的概念、定义、翻译、参考文献-科学参考

In United States weather observing practice, the rule which governs the assignment of sky cover amount to any layer of cloud or obscuring phenomenon, and to the total sky cover; in essence, this principle states that the sky cover at any level is equal to the summation of the sky cover of the lowest layer plus the additional sky cover provided at all successively higher layers up to and including the layer in question; thus, no layer can be assigned a sky cover less than a lower layer, and no sky cover can be greater than 1.0 (10/10).

单词	summation principle
释义	summation principle [sǝ`mā·shǝn ´prin·sǝ·pǝl] ^METEOROLOGY In United States weather observing practice, the rule which governs the assignment of sky cover amount to any layer of cloud or obscuring phenomenon, and to the total sky cover; in essence, this principle states that the sky cover at any level is equal to the summation of the sky cover of the lowest layer plus the additional sky cover provided at all successively higher layers up to and including the layer in question; thus, no layer can be assigned a sky cover less than a lower layer, and no sky cover can be greater than 1.0 (10/10).
随便看	upper branch upper bright band Upper Cambrian Upper Carboniferous upper consolute temperature upper control limit Upper Cretaceous upper critical solution temperature upper culmination upper curtate upper cyclone Upper Devonian upper explosive limit upper face height upper flammable limit upper front upper half-power frequency upper high Upper Huronian upper integral upper inversion Upper Jurassic upper-level anticyclone upper-level chart upper-level cyclone