graded density 中文意思是什麼
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Using the cluster analysis method and studying 16 sampling plots of shrub grassland where bothriochloa ischaemum is the dominant species, and the plots ' grass frequency, grass coverage, density, height, and biomass, we graded the plots into five grazing stages : light, proper, moderate, serious, and extreme
摘要在對放牧利用下的白羊草灌叢草地頻度、蓋度、密度、高度、生物量等數量特徵調查基礎上，運用系統聚類分析方法，可戒分為輕放、適牧、中牧、重牧和極牧五個階段。 -
We found that porphyran is a kind of good material for optical limiter. but to date no materials have exhibited strong enough nonlinear response to protect sensitive optical elements from laser - induced damage., we researched the graded density limiter and tandem limiter
為解決現有非線性材料的非線性不能達到有效激光防護效果的問題，我們又研究了串列光限幅器件及濃度剃度光限幅器件的光限幅效率的影響因素。 -
At the same time we abroad some results of [ 1 ]. by introducing the concept of [ 3 ] about gr - linearly compact discrete ( gr - l. c. d. ), we have proved density theorem in semigroup graded module, and gain a equivalence : for, sqa is gr - injection if and only if for, rq is gr - linearly compact discrete ( gr - l. c. d. )
第四部分證明了半群分次模上的密度定理，並給出了一個等價條件，即：對任意的s s ， _ sq _ a是分次內射的，當且僅當對任意的， _ rq _是分次線性離散緊的，記作： gr ? 1 . c . d
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