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Seite 394
其餘種類皆為廣適應性種類( Indifferent species )耐污染種類在各採樣站出現頻率( frequency )頗高。有三個種類 G. parvulum , N. seminulum var.hustediti 及 P. braunii var . apphicephala 在三次採樣(每次九站)共 27 個樣本中全部出現。
其餘種類皆為廣適應性種類( Indifferent species )耐污染種類在各採樣站出現頻率( frequency )頗高。有三個種類 G. parvulum , N. seminulum var.hustediti 及 P. braunii var . apphicephala 在三次採樣(每次九站)共 27 個樣本中全部出現。
Seite 398
12 0.91 0.87 0.9 表三、筏子溪出現好污染及好清潔矽藻指標類,出現頻率及成為優勢種之次數 frequency * Dominancy ** Saprophilous Species frequency * Dominancy ** Saproxenous Species 21 1 18 0 Achnanthes exigua var . heterovalva Cocconeis ...
12 0.91 0.87 0.9 表三、筏子溪出現好污染及好清潔矽藻指標類,出現頻率及成為優勢種之次數 frequency * Dominancy ** Saprophilous Species frequency * Dominancy ** Saproxenous Species 21 1 18 0 Achnanthes exigua var . heterovalva Cocconeis ...
Seite 439
... 其運動方程式是二自由度質量彈簧及阻尼系統,其穩定解是由特徵方程式根來決定,由衰退時間指數函數,指數函數和時間 sine (或 cosine )函數乘積,和收斂交錯級數和時間 sine (或 cosine )函數等組合而成,其連接平盤在頻率定義域內的力傳遞比與位移傳遞比, ...
... 其運動方程式是二自由度質量彈簧及阻尼系統,其穩定解是由特徵方程式根來決定,由衰退時間指數函數,指數函數和時間 sine (或 cosine )函數乘積,和收斂交錯級數和時間 sine (或 cosine )函數等組合而成,其連接平盤在頻率定義域內的力傳遞比與位移傳遞比, ...
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