If R satisfies =0 for any elements x ,y in R then ⑴when k =1, R is commutative;⑵when R has the unity, R is commutative;⑶when R has at least one right regular element and f 2 (t 1,t2) has no terms with degree1 such that Fn= F then R iscommutative when R has at least one right regular element. Here we would like to point out that the above results generalized the results of Fu changlin ,moreover generalized some results of other references . This results enriched the commutative conditions of any ring.

若任取R 中元x欧美AAAA片中文字幕， y均有=0 那么⑴k =1時R 為交換環(huán)免费一级毛片在线播放放视频；⑵R 有單位元時R 為交換環(huán)大黄特黄A片,欧美丰满大屁股；⑶f_2 (t_1，t_2)中t_2的次數(shù)不小于k -1且R 中至少有一個右正則元時R 為交換環(huán)玖玖爱www。

This paper firstly introduces the concept of least function dependence set and the minimal fixed point theory, and then analyzes the relation between closure of function dependence set and complete lattice, and puts forward analyzes a concrete solution of least function dependence with use of minimal fixed point theory.

本文嘗試采用嚴密的邏輯方法黄片WWWWWWWWWW，利用最小不動點理論去求解最小函數(shù)依賴集。1最小函數(shù)依賴集(1)函數(shù)依賴一個數(shù)據(jù)依賴是關(guān)于關(guān)系數(shù)據(jù)庫中關(guān)系的屬性值之間的相關(guān)關(guān)系的一個命題凹凸视频黄色网站在线观看，它規(guī)定了一個關(guān)系數(shù)據(jù)庫的規(guī)范所滿足的完整性約束條件美女被cao喷水视频在线观看。

The compositions include at least one polymerizable aryl acid compound, an effective amount of a polymerization initiator, and at least 10 percent by weight of ceramic, metal and/or metal oxide filler particles having a particle size less than 500 microns.

組合物含有至少一種可聚合的芳基酸化合物、有效量的聚合引發(fā)劑以及至少10％其粒徑小于500μm的陶瓷亚洲欧美国产一区二区三区、金屬和／或金屬氧化物填充料顆粒91绿色在线视频观看。

In this paper,we introduce the consistent adjusted least squares estimator and propose a relaxed consistent adjusted least squares method,which can be applied to more general relationship,for registration.

但是，如果由于不確定因素的影響91精品露脸在线观看，使得不能獲得兩幅影像的精確配準99精品国自产在线视频，那么同一位置上不同時間的特征差別將會被不同位置上的特征差別所代替[3]。

The microwave oven of the present invention comprises a cavity assembly which defines a cooking chamber therein and functions as a framework of the microwave oven, an outer casing which includes a top portion and side portions formed at both ends of the top portion to enclose the cavity assembly and interior parts and is provided with convexo-concave reinforcements at the top portion and at least one side portion, a door of which one side is connected to the cavity assembly to be a pivot center and which selectively causes the cooking chamber to be open and close, and a back plate which defines a rear face of the cavity assembly and is provided with a convexo-concave reinforcement formed along at least one edge portion thereof.

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Plum is small: I feel to be told from finance affairs, sale most at least can accomplish 10 million above, resemble online number, PV, most at least can resemble today's decuple above, other still a lot of respects can be done, but we did not catch up with, I think everybody can achieve this goal in 4 years or so.

李子微：我覺得從財務(wù)上來講天堂在线WWW中文无码射，銷售最起碼可以做到一千萬以上，像在線人數(shù)鸥美激情性生活大片，PV免费无码漫画，最起碼可以像今天的十倍以上，其他還有很多方面可以做久久综合伊人噜噜色，但是我們沒有跟上6719国产欧美在线，我認為大家在4年左右可以達到這個目標。

I said, to see this in time ; I do not mean to say that our own eyes will look upon it : it may be so far off, as indeed it seems to some, that many would scarcely think it worth while thinking of: but there are some of us who cannot turn our faces to the wall, or sit deedless because our hope seems somewhat dim ; and, indeed, I think that while the signs of the last decay of the old art with all the evils that must follow in its train are only too obvious about us, so on the other hand there are not wanting signs of the new dawn beyond that possible night of the arts, of which I have before spoken : this sign chiefly, that there are some few at least who are heartily discontented with things as they are, and crave for something better, or at least some promise of it — this best of signs : for I

我說日韩无码夫妻黄片，看到這個時間激情欧美色播；我的意思并不是說，我們自己的眼睛看它：它可能是如此遙遠国产一级黄片一区二区三区，因為事實上它似乎一些轻点网站，許多將幾乎認為值得思考：但有一些我們誰不能把我們的臉在墻上免费一级精品，或坐在deedless因為我們的希望似乎有些暗淡；国产精品区第33页，事實上欧美在线观看h，我認為，雖然在過去的跡象衰變舊藝術(shù)與所有的罪惡乱弄欧美丰满胖老熟妇，必須遵循的列車只對我們太明顯人人爱人人操人人看，所以在另一方面有不想標志的新的曙光超出可能晚上的藝術(shù)，我面前講：這個標志主要是免佛一级蓂个片，有一些少數(shù)至少誰衷心不滿是因為他們的事情98资源站人妻，并渴望有更好的，或者至少是它的一些承諾-這最好的跡象：對我猜想色色视频黄，如果一些半打男子在任何時候切實心中對未來哪些東西沒有人與自然的不和諧欧美三级视频播放在线观看网址，這將成為過去一天或其他；因為它不是偶然的一個想法開始的首長少數(shù)一级做a爰片久久毛片A片999；而他們推的欧美1819sex性处BBW，并被迫發(fā)言或行為中的一些攪拌世界心臟否則得不到表達。

What are we to say of the law of delict or tort?It is a necessary part of any legal system.People must be allowed actions to protect themselves aginst the aggressions of other people,and such actions cannot be forced into the background in any legal treatise.But it is not altogether surprising that,not being a law of movement,it did not call forth the best efforts of the jurists;and that ,in spite of certain remarkable developments,the law of delict retained many very primitive features and is on the whole the least satisfactory because the least elaborated part of Roman private law.

我們怎樣說法則的黑社會性質(zhì)組織犯罪或侵權(quán)行為它是一種必要的任何法律體系的一部分…人們必須行動來保護自己的aggressions取款機的其他人国产a一级毛片爽爽影院无码小说，這種行為不能被逼入背景在任何法律論文但這并不完全是令人驚訝的是91精品制服丝袜在线影院，不規(guī)律的運動，它并沒有帶來最好的努力国产一级不卡性爱av黄片在线免费观看，并在法學(xué)家的某些顯著的發(fā)展》、《保留了許多非常原始特征黑社會性質(zhì)組織犯罪和總的來說是最令人滿意的一部分一级伦奷视频A片一女，因為至少闡述了羅馬私法AA级女人大片免费观看视频。

A rubber composition for a tire improving friction performance on ice, comprising 0.5 to 20 parts by weight of a nonmetallic fiber having an average fiber diameter of 1 to 100 μm and an average fiber length of 0.1 to 5 mm, and 0.5 to 30 parts by weight of a filler having at least 2 projections and an average length of the projections of at least 10 μm based on 100 parts by weight of a diene rubber, and a pneumatic tire comprising the same.

提供了一種改善冰上摩擦性能的輪胎用橡膠組合物，以及含有該橡膠組合物的充氣輪胎一级欧洲免费视频在线观看。一種輪胎用橡膠組合物玖玖色综合国产，以100重量份的二烯橡膠為基準，還含有0.5～20重量份平均纖維直徑為1～100μm并且平均纖維長度為0.1～5mm的非金屬纖維黄色网站久，以及0.5～30重量份的具有至少2個突起并且平均突起長度至少為10μm的填料三级在线理论国产精品第一页，以及一種含有該橡膠組合物的充氣輪胎。

The virgin thermoplastic polyurethane and the thermoplastic polyurethane of the scrap material are polymerized using at least about 60 percent by weight, based on the weight of the polyurethane produced, of a polyester diol having a weight average molecular weight of at least about 500 and having from four to five carbon atoms between substantially all of the ester groups.

未使用過的熱塑性聚氨酯和廢料的熱塑性聚氨酯是使用至少約60wt％的聚酯二醇聚合而成的www.欧美色图，基于產(chǎn)生的聚氨酯重量一级免费黄色电影。其中該聚酯二醇的重均分子量為至少約500，并基本所有的酯基團之間均有4～5個碳原子国产Aⅴ无码毛片一级。