time reverse test 中文意思是什麼
time reverse test
解釋
時間互換測驗-
The sample with low emitter efficiency has completed as the method of above. this lead to the greatly decrease of the reverse recovery time and the low reverse leakage and forward voltage, especially the excellent temperature character of the leakage. the test date shows that the samples reach the first class of international level
本論文作者通過模擬測試，驗證了課題研究的理論設想，並設計製作了具有低陽極發射效率結構的高壓功率frd ，利用局域鉑摻雜和電子輻照相結合的壽命控制方式，實現器件反向恢復時間的極大減小，並且反向漏電流、軟度因子、正向壓降等關鍵參數也較理想，且具有極佳的漏電溫度特性，達到器件綜合性能的優良折衷，達到國際先進水平。 -
In a quick test on a table with 100, 000 rows loaded using a sequence, a normal index was used for most queries returning up to 30 rows, as was the reverse key index, however, when the number of rows went up to 1, 000, 000 the reverse key index was never used and a full table scan was used every time
在一個用一個序列載入並含100 ， 000行的表上做一個快速的測試，分別用普通索引和逆序索引查詢並返回30行數據，當行數增長到1 ， 000 ， 000 ，將不再使用逆序索引而是每次使用全表掃描。
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