base lifetime 中文意思是什麼
base lifetime
解釋
基區載劣壽命-
( 2 ) an aminobenthiazole schiff base has been synthesized as a new fluorescence carrier by reacting 2 - aminobenthiazole with p - allyoxybenzoldohyde. the new kind of schiff base can be utilized for preparing an optical sensor, used for determining furazolidone based on the fluorescence quenching. aminobenthiazole schiff base immobilized on a glass plate surface by covalent bonding can circumvent the leakage of the fluorephore from the sensor surface and guarantee a relatively long working lifetime
（ 3 ）用強熒光基團2 -氨基苯並蒽酮與對烯丙氧基苯甲醛合成了另一種新的schiff堿類化合物，與甲基丙烯酸羥乙酯、丙烯酰胺、環乙二醇二丙烯酸酯共聚制得光極膜，制備了一種苯並蒽酮schiff堿光化學傳感器，可用於單質碘的測定。 -
The projectile amounts in the cleaning and cooling cycle of lifetime tests of all kinds of firearms were fixed on the base of the vast and systematic research for actual combats and the statistic analysis of combat examples
經大量而系統的實戰研究、戰例統計分析，確定既可滿足試驗要求也可指導實戰的各種槍械壽命試驗中的擦拭與冷卻周期射彈量。 -
Abstract : in this article, it is introduced that a method of rooting has been successfully used in stabing the base of stockhouse of grain, in order to effectively stop sinking and cracking and extend the lifetime of those buildings, which do not have firm base
文摘:針對浙江省奉化市糧食局米廠大米車間、糧庫基礎托換和鍋爐房基礎加固工程，成功地應用樹根樁基礎托換技術，使沉降和裂縫得到有效控制，危房再現使用價值。 -
Cf is a kind of non - different recommendation to all customers, so it is may appear that the company spend much cost but have little revenue. recently a new recommend technology base on lifetime value of customers have emerged, the centre of the technology is to use the weighed sum of the three variable to classify the customers and the reason of use weighed variable is that think about the relative important degree. then we can recommend products according to the association rule in the classify of same clv. the shortcoming of this recommendation is that the recommendation may have some error when the customers ’ data is not enough to form regular value
近年來出現了一種採用基於客戶生命周期值的加權rfm （表示客戶生命周期的三個指標變量）技術的推薦方法，這一技術的核心思想就是採用這三個客戶屬性變量的加權和的方法來對客戶進行聚類，其中為變量加權是考慮到不同變量對顧客產生的不同重要程度的影響。對符合某一生命周期類型的客戶按照商品挖掘關聯技術進行商品推薦。這種推薦方法的弊端在於當客戶的交易數據不足以形成規律化的量值時，推薦可能會出現偏差。
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