When this branching processes in random environments is subcritical, it is a certainty that its two copying processes can be migrated a supercritical branching processes in random environments through giving an acute probability generating function derivative.
給定一個(gè)繁衍概率母函數(shù)均值待定的兩狀態(tài)獨(dú)立同分布隨機(jī)環(huán)境分枝過(guò)程,證明了若該隨機(jī)環(huán)境分枝過(guò)程是下臨界的,則通過(guò)適當(dāng)選擇其繁衍概率母函數(shù)均值的取值后,它的兩個(gè)獨(dú)立復(fù)制過(guò)程總能夠混合重組為一個(gè)上臨界隨機(jī)環(huán)境分枝過(guò)程;但反之,若該隨機(jī)環(huán)境分枝過(guò)程是上臨界的,則它的兩個(gè)獨(dú)立復(fù)制過(guò)程不一定總能夠混合重組為一個(gè)下臨界隨機(jī)環(huán)境分枝過(guò)程。
We study the general model of branching processes in random environment and discuss their properties,moreover,we introduce the concepts of general subcritical branching chain in random environment and get their properties.
研究了隨機(jī)環(huán)境中分枝鏈的一般模型,并討論了它們的一些性質(zhì),在此基礎(chǔ)引入廣義的下臨界分支鏈的概念并得到了相應(yīng)的性質(zhì)。
An empirical formula, which can be easily used to calculate the critical reduction for closing the center pore, is obtained by regres.
將數(shù)值模擬結(jié)果進(jìn)行擬合處理,得到了便于應(yīng)用的空洞閉合臨界壓下率的計(jì)算公式。
Surface defects needs the largest critical reduction to close,and the critical reduction of defects located at 1/8 thickness is lowest.
結(jié)果表明:在足夠的壓下率下,特厚板中矩形缺陷能夠被壓合,缺陷的尺寸及在厚度方向的位置對(duì)缺陷壓合有很大影響;板坯表面的缺陷壓合所需的臨界壓下率最大,t/8(t代表厚度)處所需的臨界壓下率最小,即表面處的缺陷最難壓合,缺陷壓合由難到易按所處位置依次為表面、t/2、t/4和t/8,將該廠特厚板軋制道次壓下率提高到18%以上,將可有效避免成品中缺陷的出現(xiàn);矩形缺陷的長(zhǎng)高比λ越大,臨界壓下率越小,越易壓合;當(dāng)λ從小于1增大到大于1的過(guò)程中,臨界壓下率急劇減小,但當(dāng)λ繼續(xù)增大,臨界壓下率減小的趨勢(shì)變得比較平緩;當(dāng)λ<1時(shí),呈雙"Y"型閉合;當(dāng)λ≥1時(shí),呈"Z"型閉合。
On the Extinction Time of Subcritical Branching Processes in Random Environment;
隨機(jī)環(huán)境中下臨界分枝過(guò)程的滅絕時(shí)
Determination of Critical Power Density of Laser Deep-Penetration Welding
激光深熔焊接下臨界功率密度的確定
Finally, we get the limit theories of (The equation is abbreviated).
最后，得到了下臨界情況下(方程式略)的極限理論。
Some Limit Theorems for Subcritical Branching Processes in Random Environment;
隨機(jī)環(huán)境中下臨界分枝過(guò)程中的一些極限定理
critical rate of fall of commutating current
換向電流臨界下降率
a critical temperature of water is 100 degrees C--its boiling point at standard atmospheric pressure; critical mass; go critical.
水的臨界溫度是攝氏100度——標(biāo)準(zhǔn)大氣壓下的沸點(diǎn)；臨界物質(zhì)；達(dá)到臨界。
The Bounds of Critical Function for (k,s)-SAT;
關(guān)于（k，s）-SAT臨界函數(shù)上下界的研究
The New Lower Bound of the Number of Vertices of Degree 6 in Contraction Critical 6 Connected Graphs;
收縮臨界6連通圖中6度頂點(diǎn)數(shù)新的下界
The Lower Bound on the Size of Edge-Coloring Critical Graph & the Fractional Edge Coloring of Some Graphs;
臨界圖邊數(shù)的下界與某些圖類的分?jǐn)?shù)邊染色
Both will break at the same critical state of stress.
兩者將在相同的臨界壓力狀態(tài)下破碎。
Catalytic Synthesis of Cyclic Carbonates under Supercritical Conditions;
超臨界條件下環(huán)狀碳酸酯的催化合成
PRODUCTION OF BIODIESEL FROM RICE BRAN OIL IN SUPERCRITICAL METHANOL
米糠油超臨界甲醇條件下制生物柴油
In supercritical reaction, coke deposition can be reduced by supercritical fluid and life of catalyst is prolonged.
在超臨界條件下，超臨界流體能夠抑制催化劑積炭，延長(zhǎng)催化劑壽命。
Study on Critical Failure Vibration Velocity of Underground Chambers under Action of Blasting Vibration
爆破振動(dòng)作用下地下洞室臨界振速的研究
Water becomes supercritical at about 375 c and 220 atm, I think.
水大概是在375℃和220個(gè)大氣壓下達(dá)到超;臨界的。
The following details pertain primarily to the critical-depth flume.
下面的詳細(xì)說(shuō)明主要是針對(duì)臨界深度型水槽的。
Flavius Josephus who says, A wind from above was precipitated upon the earth;
弗拉菲于斯·約瑟夫作“上界的風(fēng)驟臨下土”；
The next step is to find the critical t values, t* which mark off α/2.
下一步是找出劃分出α/2的t的臨界值t*。