We use mechanics testing method like stretch and bend to test the 3mm magnesium alloy(MB3) after friction stir welding. The stretch sample can show no less than 70% of raw materials performance when the condition is suitable: R= 1500r/min,v = 90mm/min,R/v=16.7 and F=1470N. Curve intensity of the joint reaches 90.2% and 83.0% at obverse and inverse curve separately.

利用拉伸三级黄片a、彎曲等力學(xué)測試手段對攪拌摩擦連接的3mm厚MB3鎂合金板進行機械性能檢驗尤物在线无码视频观看网址，檢驗結(jié)果為：在使用焊接合理工藝參數(shù)R=1500r／min欧美黑白配性爱视频，v=90mm／min黄色免费专区，R／v=16.7毛片1毛片2毛片3毛片4，F(xiàn)=1470N的情況下黄色大片免费看视频，拉伸試樣70％以上斷裂于母材，接頭正彎與背彎強度分別可以達到母材的90.2％和83.0％国产一级a毛一级a看免费视频,附近约爱。

For the current in the ionization chamber is not amplified, so it is hard to collect the electric signal, in this paper, a direct I/F convertor is used to convert the electric current signal into frequent signal.

由于電離室本身不對電流放大无码A片日韩毛片精品，因此信號的采集較為困難，本文另外介紹了用I/F直接變換的電路以達到信號的轉(zhuǎn)換福利精品最新视频查看。

WT9.BZ: Theory of generalized tautology in logic system , W and W k is generalized and applied to Lukasiewicz logic system. The main results are as follows: congruence about on set of logic formulas F has been obtained in the system; it is proved that in this system, for any irrational number α, there does not exist accessible α-tautology; and for any real number α, there does not exist accessible α+-tautology; and the relation theorems have been given between categori...

將邏輯系統(tǒng) W 国产成人中文激情小说网站在线观看，W ，Wk 中的廣義重言式理論進行推廣并應(yīng)用到Lukasiewicz邏輯系統(tǒng)中国产理伦免费视频，主要結(jié)果是：得到了邏輯公式集F在該系統(tǒng)中關(guān)于﹁同余的分劃天天人人夜夜操；證明了在該邏輯系統(tǒng)中對每個無理數(shù)α而言，不存在可達α重言式啪啪午夜，且對每個實數(shù)α而言日本在线亚洲国产视频看看，不存在可達α+重言式；給出了廣義重言式毛片av免费观看不卡、廣義矛盾式各類之間的關(guān)系定理国产又长又大又粗又硬视频。

In the mean time we also give out a reduction way for nonlinear generalized system F =0 by use of the special projection mappings Q . Based on these we prove that the qualitative structure near the isolated equilibrium point of regular nonlinear generalized system is qualitatively equivalent with the structure near the equilibriun point of the linearization system of nonlinear generalized system, so we give out a way for qualitative analysis near equilibrium point of nonlinear generalized system.

其次，對一般形式的非線性廣義系統(tǒng)F=0欧美电影三级在线观看，利用特殊選擇的投影函數(shù)Q欧美成人顶级精品视频，給出了一種歸約方法，在此基礎(chǔ)上91国内精品久久久久网站，并證明了正則非線性廣義系統(tǒng)問題的孤立平衡點的小鄰域的定性結(jié)構(gòu)等價于其線性化后的線性廣義系統(tǒng)平衡點的定性結(jié)構(gòu)欧美一级黄片尤物视频污无毒不卡，從而為非線性廣義系統(tǒng)的平衡點的定性分析提供了一條途徑日韩毛片在线观看。

For k≥1, an isometry φ between codes over Zsubscript P(superscript k+1 and codes over Z(subscript P^2) is introduced and used to give a generalization of the Gray map φ: Z(superscript n subscript 4)→F(superscript 2n subscript 2). Furthermore, by means of this isometry, the concept of negacyclic codes is extended to codes over the ring Zsubscript P(superscript k+1. A characterization of these codes in terms of their images under φ is given. It is also shown that the generalized Gray map image of the 1-P(superscript k-cyclic code is a distance-invariant quasi-cyclic code.

文章引入了Z下標(biāo) P(上標(biāo) k+1碼和Z(下標(biāo) P^2)碼之間的等距同構(gòu)φ(k≥1)；利用φ把Gray映射φ：Z(上標(biāo) n 下標(biāo) 4)→F(上標(biāo) 2n 下標(biāo) 2)推廣為φ：美女下部隐私扒开视频无遮挡白；而且利用φ18禁在线永久免费观看不卡，負循環(huán)碼概念被推廣到Z下標(biāo) P(上標(biāo) k+1碼，得到了1-P(上標(biāo) k-循環(huán)碼乱伦小说图片视频；依據(jù)等距同構(gòu)φ欧美色淫淫，給出了這些碼的表示；也證明了1-P(上標(biāo) k-循環(huán)碼在推廣的Gray映射下的像是距離不變的準(zhǔn)循環(huán)碼欧美亚洲日韩ai在线博彩。

Products have the F series of European standards, as well as the Japanese standard JIS series.

產(chǎn)品有歐洲標(biāo)準(zhǔn)的F系列欧美va在线视频品，以及日本標(biāo)準(zhǔn)的JIS系列。

SS than FS experienced dog's age, experienced the pain of red R14's, experienced a storm on the eve of 60 FS with BB 1VN the age of the water, but also experienced a 17 Austria 44 men's water ice, of course, this version does not say I believe that most of the old FS-player experience in a little under the Austrian non-F is out of the brain or the needs of JJC, most of the time will go back to their previous line of PVP This is the question of the individual game details.

經(jīng)歷過FS不如SS狗的年代日韩视频在线一区第四页，經(jīng)歷過沖R14的痛苦年代噜噜色噜噜网色妞网av，經(jīng)歷過暴風(fēng)前夕60級FS帶水BB 1VN的年代，也經(jīng)歷過17奧44冰的水男年代国产区精品第一页，當(dāng)然這個版本就不說了亚洲小说在线综合专区，我相信大部分的老FS玩家都是在稍微體驗下奧F 的無腦或者完全是出于JJC的需要外，大部分時間里還是會走回自己以前的PVP路線美女又黄又湿又刺激又免费，這就是個人游戲底蘊問題欧美性爱在线播。

John F Kennedy has a goal for American to go to the moon within the decade.

約翰F肯尼迪有美國人的一個目標(biāo)去在十年之內(nèi)的月亮。

He'll lie in repose Thursday and Friday at the John F. Kennedy Presidential Library and Museum in Boston.

他的遺體將于周四和周五安放在波士頓的約翰· F·肯尼迪總統(tǒng)圖書館和博物館中另类亚洲精品网站av。

In 1961, President John F. Kennedy used the legendary words, Ask not what your country can do for you.

"不要問你的國家能為你做什么99久久久无码国产精片，要問你能為你的國家做什么"-1961年，約翰·F欧美黄频免费a。