緻密化分式值 的英文怎麼說
中文拼音 [zhìmìhuàfēnshìzhí]
緻密化分式值
英文
compacting fraction value-
The coating effects of these modifiers are evaluated in the order of ( napoa ) 6 > c2hsoh > na2sio3 > h2o > naoh. the organic modification reagent such as sodium stearate and polyethylene glycol can modify the nanosized powders, sodium stearate has good effect when its adding amount to nano - tio2 is 8 %, the concentration is about 0. 1 mol / l, the value of ph is 5, and the reaction period is up 30 minutes. to modify the powders with polyethylene glycol, the amount must be limited from 1 % to 2 %, the value of ph is between 3 and 5, and the reaction period should be up to 2 hours, the effect will be mo
不同分散劑對其分散效果為: （ napo3 ） 6 > czhsoh > n處5103 > hzo > naoh ;採用有機改性劑硬脂酸鈉和聚乙二醇進行了納米二氧化欽的有機改性研究，獲得了改性劑用量，濃度等最佳工藝條件的參數;對納米二氧化欽進行了包裹二氧化硅的研究，適當調整溶液的ph值，滴加硫酸的速度，以及改變滴加方式，獲得了較緻密的包覆二氧化欽，其分散性和酸溶性都獲得了較大程度的改善。But in more situations the random variables generating counting processes may not independent identically distributed, and in all kinds of dependent relations, negative association ( na ) and positive association ( pa ) are commonly seen. the research and apply in this aspect are rather valuable. in chap 2 we prove wald inequalities and fundamental renewal theorems of renewal counting processes generated by na sequences and pa sequences ; in chap 3 we are enlightened by cheng and wang [ 8 ], extend some results in gut and steinebach [ 7 ], obtain the precise asymptotics for renewal counting processes and depict the convergence rate and limit value of renewal counting processes precisely ; at last, in the study of na sequences, su, zhao and wang ( 1996 ) [ 9 ], lin ( 1997 ) [ 10 ] have proved the weak convergence for partial sums of stong stationary na sequences. however product sums are the generalization of partial sums and also the special condition of more general u - statistic
但在更多的場合中，構成計數過程的隨機變量未必相互獨立，而在各種相依關系中，負相協（ na ）和正相協（ pa ）是頗為常見的關系，這方面的研究和應用也是頗有價值的，本文的第二章證明了na列和pa列構成的更新計數過程的wald不等式和基本更新定理的一些初步結果；本文的第三章則是受到cheng和wang [ 8 ]的啟發，推廣了gut和steinebach [ 7 ] ）中的一些結論，從而得到了更新計數過程在一般吸引場下的精緻漸近性，對更新計數過程的收斂速度及極限狀態進行精緻的刻畫；最後，在有關na列的研究中，蘇淳，趙林成和王岳寶（ 1996 ） 》 [ 9 ] ，林正炎（ 1997 ） [ 10 ]已經證明了強平穩na列的部分和過程的弱收斂性，而乘積和是部分和的一般化，也是更一般的u統計量的特況，它與部分和有許多密切的聯系又有一些實質性的區別，因此，本文的第四章就將討論強平穩na列的乘積和過程的弱收斂性，因為計數過程也是一種部分和，也可以構成乘積和，這個結果為研究計數過程的弱收斂性作了一些準備。In the present dissertation, the densification mechanisms and the structure controlling of various transient layers of w - mo - ti flier - plates with graded wave impedance were mainly investigated. wholly dense w - mo - ti flier - plates were then prepared by powder stacking and hot - pressing. in order to achieve a required wave impedance profile and a quasi - continuous change along the thickness direction, the ratios of components in transient layers were well adjusted
論文採用粉末冶金方法，詳細研究了w - mo - ti體系梯度飛片材料中各組元的燒結緻密化機理與控制方法，以精細控制不同配比的混合粉末的鋪填方式與鋪填結構來減小梯度飛片材料內部波阻抗值的躍變幅度，成功制備出波阻抗按指定分佈特徵沿厚度方向準連續變化的、波阻抗面平行度高並且整體緻密的w - mo - ti體系梯度飛片。
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