contrast grade 中文意思是什麼
contrast grade
解釋
反差度-
Egg chambers with the 1st grade appeared on the 11th day after parasitization ( the pupa was white, and its eyes were scarlet ), egg chambers with the 2nd grade appeared on the 12th day after parasitization ad egg chambers with the 3rd grade occurred on the 1st day after emergence. feeding adults of this parasitoid with 20 % honey solution showed no marked effects on the ovarian development except significantly prolonging their life span ( most adults can survive for half a month and even to about a month ). in contrast, feeding with nothing or only wa ter, the wasps only survived for four days. no difference in ovariole lengh of female adults was found among different feedig treatments
卵巢管從寄生后第10天開始出現（此時，卵巢管是透明的，卵室尚未形成） ， 1級卵從寄生后第11天開始出現， 2級卵從寄生后第12天開始出現， 3級卵從羽化后第一天開始出現；喂20蜂蜜水對卵巢發育有一定促進作用，能顯著延長麗蠅蛹集金小蜂的壽命，不餵食或僅喂蒸餾水，其壽命僅4天，而餵食20蜂蜜水，從第11天開始出現死亡，大部分可存活15天，另有少部分生存達一個月之久。 -
Multi - strategy means as follows : utilizing classifying data mining methods based on decision tree to analyze the data in grade database. a grade decision tree is generated to show directly a position of grade according to different computing methods and to support estimate. at the same time, utilizing classification method based on summing - up principles to do such things as grade query analysis and prediction and contrast analysis to realise automatic generation of grade analysis report, test paper ’ s quality assessment report and quality analysis table which plays an active role in improving teaching and test paper ’ s quality
這里多策略主要是指:採用基於決策樹的分類挖掘方法，對學生成績庫中數據進行分析，生成學生成績決策樹，能直觀顯示出某一成績在不同等級計算方式中所處的位置，為教學部門提供評價信息;同時採用基於總結規則的統計分析方法，完成不同情況下的成績查詢、預測及對比分析，實現學生成績分析報告、試卷質量評價報告及質量分析表的自動生成。 -
Demonstration research 1 interprets that under me normal demand there are no distinct diversity between the grade of the experiment class and the contrast class, but the grade of the experiment class is only a little better than that of the contrast class. but the grade of the experiment class where g. polya inspiring method was used is the best
實證研究一，說明了在常規要求下實驗班與對比班數學成績沒有顯著性差異，只是實驗班比對比班成績稍好一些，而含波利亞啟發法的實驗班成績最好；實驗班的學生成績差距縮小，僅含分層教學的實驗班的效果最好。
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