lower critical

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.

给定一个繁衍概率母函数均值待定的两状态独立同分布随机环境分枝过程,证明了若该随机环境分枝过程是下临界的,则通过适当选择其繁衍概率母函数均值的取值后,它的两个独立复制过程总能够混合重组为一个上临界随机环境分枝过程;但反之,若该随机环境分枝过程是上临界的,则它的两个独立复制过程不一定总能够混合重组为一个下临界随机环境分枝过程。

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.

研究了随机环境中分枝链的一般模型,并讨论了它们的一些性质,在此基础引入广义的下临界分支链的概念并得到了相应的性质。

An empirical formula, which can be easily used to calculate the critical reduction for closing the center pore, is obtained by regres.

将数值模拟结果进行拟合处理,得到了便于应用的空洞闭合临界压下率的计算公式。

Surface defects needs the largest critical reduction to close,and the critical reduction of defects located at 1/8 thickness is lowest.

结果表明:在足够的压下率下,特厚板中矩形缺陷能够被压合,缺陷的尺寸及在厚度方向的位置对缺陷压合有很大影响;板坯表面的缺陷压合所需的临界压下率最大,t/8(t代表厚度)处所需的临界压下率最小,即表面处的缺陷最难压合,缺陷压合由难到易按所处位置依次为表面、t/2、t/4和t/8,将该厂特厚板轧制道次压下率提高到18%以上,将可有效避免成品中缺陷的出现;矩形缺陷的长高比λ越大,临界压下率越小,越易压合;当λ从小于1增大到大于1的过程中,临界压下率急剧减小,但当λ继续增大,临界压下率减小的趋势变得比较平缓;当λ<1时,呈双"Y"型闭合;当λ≥1时,呈"Z"型闭合。

On the Extinction Time of Subcritical Branching Processes in Random Environment;

随机环境中下临界分枝过程的灭绝时

Determination of Critical Power Density of Laser Deep-Penetration Welding

激光深熔焊接下临界功率密度的确定

Finally, we get the limit theories of (The equation is abbreviated).

最后，得到了下临界情况下(方程式略)的极限理论。

Some Limit Theorems for Subcritical Branching Processes in Random Environment;

随机环境中下临界分枝过程中的一些极限定理

critical rate of fall of commutating current

换向电流临界下降率

a critical temperature of water is 100 degrees C--its boiling point at standard atmospheric pressure; critical mass; go critical.

水的临界温度是摄氏100度——标准大气压下的沸点；临界物质；达到临界。

The Bounds of Critical Function for (k,s)-SAT;

关于（k，s）-SAT临界函数上下界的研究

The New Lower Bound of the Number of Vertices of Degree 6 in Contraction Critical 6 Connected Graphs;

收缩临界6连通图中6度顶点数新的下界

The Lower Bound on the Size of Edge-Coloring Critical Graph & the Fractional Edge Coloring of Some Graphs;

临界图边数的下界与某些图类的分数边染色

Both will break at the same critical state of stress.

两者将在相同的临界压力状态下破碎。

Catalytic Synthesis of Cyclic Carbonates under Supercritical Conditions;

超临界条件下环状碳酸酯的催化合成

PRODUCTION OF BIODIESEL FROM RICE BRAN OIL IN SUPERCRITICAL METHANOL

米糠油超临界甲醇条件下制生物柴油

In supercritical reaction, coke deposition can be reduced by supercritical fluid and life of catalyst is prolonged.

在超临界条件下，超临界流体能够抑制催化剂积炭，延长催化剂寿命。

Study on Critical Failure Vibration Velocity of Underground Chambers under Action of Blasting Vibration

爆破振动作用下地下洞室临界振速的研究

Water becomes supercritical at about 375 c and 220 atm, I think.

水大概是在375℃和220个大气压下达到超;临界的。

The following details pertain primarily to the critical-depth flume.

下面的详细说明主要是针对临界深度型水槽的。

Flavius Josephus who says, A wind from above was precipitated upon the earth;

弗拉菲于斯·约瑟夫作“上界的风骤临下土”；

The next step is to find the critical t values, t* which mark off α/2.

下一步是找出划分出α/2的t的临界值t*。