down time ratio 中文意思是什麼
down time ratio
解釋
故障時間比-
3 the design theories of cooling pipe of play down internal temperature of mass concrete about diameter, length, arrange method, rate of flow, current velocity, reduce heat time, temperature disparity to in and out, reduce heating result etc. 4 the theory of influence about concrete internal temperature and concrete crack because of transform of mixture ratio and pulverized fuel ash sophisticate quantity
西安建築科技大學博士生論文一;一;一一『一一一3降低大體積混凝土內部溫度常用的冷卻水管的管徑、長度、布置方法、水流量、流速、降溫時間、進出水口的溫差、降溫效果等的設計計算理論。 4配合比及摻加料對混凝土內部溫度和混凝土開裂的影響理論。 -
However, the refractive index will increase with the increase of the flow ratio of sifu / nhs, slightly increase with the increase of substrate temperate, and decrease with the increase of rf power. by measuring the passivation results of hydrogen plasma and sinx thin film, we found an evident improvement of minor carrier lifetime in polycrystalline silicon after hydrogen plasma treatment, although it has little to do with the annealing temperature and time. the hydrogen contained in sinx thin film can enhance the carrier mobility of monocrystalline silicon, but after annealing at high temperature the mobility turns down
通過測試氫等離子體鈍化和氮化硅薄膜鈍化的效果，實驗還發現氫等離子體處理對多晶硅材料的少子壽命提高作用比較明顯，但是這種提高作用與處理溫度以浙江大學碩士學位論文王曉泉2003年5月及時間的關系不大；氨化硅薄膜中的氫對單晶硅的載流子遷移率提高有一定作用，但經過高溫處理后這種作用消失；氮化硅薄膜能提高單晶硅和多晶硅的少子壽命，具有表面鈍化和體鈍化的雙重作用；氫等離子體和氮化硅薄膜都能有效地提高單晶和多晶電池的短路電流密度，進而使電池效率有不同程度（絕對轉換效率0 -
In the anaphase of development, the water content ratio is high in the reservoir, the microcosmic distributions among the formations are different. in order to get the situation of the remaining oil, the author applied fine numerical simulation methods to study every small layers about tuo28 down reservoir. because the characters about geology and liquid are different from past time, the change have been considered
為進一步搞清坨28斷塊下油組各單元特高含水開發後期剩餘油在層間、層內的微觀分佈，本文重點介紹了精細數值模擬方法對下油組各小層的研究，與以往數值模擬研究不同的是，本次研究充分考慮了坨28斷塊的地質特點和流體特徵隨時間的變化，結合不同開發階段，建立了不同的模型，從而使研究結果更接近地下油藏實際。 -
When l / h value was too low, it would slow down the heat emission of a street, and keep the temperature higher and for a longer time, comparing with that of a high l / h - valued street. the increase of plant ratio would decrease effectively the temperature under this circumstance
增加綠化率產生的降溫效果顯著；南北走向的街區在l h較小（ 0 . 8 ）的時候，能大大減少街區吸收的太陽輻射熱，有利於降溫，但增加綠化率的降溫效果不明顯。
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