可逆的

In the last section of the chapter, sufficient and necessary conditions about weak invertibility or weak inverse for a kind of NFA are given.

进而又讨论了它们也是判定FA为弱可逆或弱逆的必要条件的情形。

Based on bilateral diagonal stretch,this paper proposes a new invertible two-dimensional map which can be used in image encryption.

利用双边对角线拉伸的思想，提出一种利用图像加密的可逆二维混沌映射。

In this paper, we show that even without the irreversibility of investment, increased output demand uncertainty may decrease investment under perfect competition.

在文章中，我们证明，在完全竞争的环境下，即使投资没有不可逆现象，产出需求不确定性的增加也会降低投资。

The research results have showed that the excavating process is a non-linear irreversible process tightly related with stress paths and stress history.

研究结果表明：隧道的开挖过程是和应力路径与应力历史密切相关的非线性不可逆过程。

The results show that the reduction of CO_2 is anone-eletron irreversible process by diffusion control which generates an anion radical.

结果发现，CO_2的还原是受扩散控制的单电子不可逆还原过程，对应着CO_2在电极表面得到电子生成了CO_2阴离子自由基CO_2~

The separation of the anodic and cathodic peak potentials is 120mV, which indicates that the process may be an irreversible reaction process.

阴极与刚极电势之间的距离△Ep为120mV，表明配合物与DNA的相互作用过程为不可逆过程。F。

The results showed that nitromethane was reduced irreversibly by one electron, and the electrode process was controlled by diffusion.

结果表明，硝基甲烷在离子液体BMImPF6中的还原反应是受扩散控制的不可逆过程。

In Chapter 2, a general model of an irreversible fluid flow system is established, in which the linear and nonlinear fluid flow resistances and the friction forces with different types are taken into account.

在第二章中，建立不可逆流体流动系统的一般模型，模型中同时考虑线性与非线性流阻和不同类型的摩擦力。

Note that due to the exponential holding time,such a process is still a Markov process,but it is irreversible.

注意到由于指数逗留时间的无记忆性，这样的过程仍然是马氏过程，但不可逆。

The soil urease and invertase activity effected by Hg was investigated in different fertility soils. The results show that soil urease activity、maximum reaction velocity (Vmax、Vmax/Km) and reaction velocity constant k have remarkably negative correlation with Hg concentration so that these can be used as ecological indexes of soil polluted by Hg, Km changes a little indicating that the reaction mechanism of Hg and urease is nonreversible competitive restraint. Urease of low soil fertility is more damaged by Hg than that of high soil fertility, with severe pollution at Hg concentration of 6.00 and 14.79mg/kg respectively; while invertase is less sensitive to Hg than urease. Cultural time has less influence on the relationship of soil enzyme and Hg concentration.

对不同肥力土壤脲酶和转化酶活性受汞影响进行了研究，结果显示，土壤脲酶活性、最大反应速度Vmax 、Vmax/Km和反应速度常数k与汞浓度呈现显著或极显著负相关关系，表明其可作为土壤汞污染的生态指标；米氏常数Km则变化较小，表明汞与脲酶作用机理为不可逆竞争抑制；低肥力土壤脲酶比高肥力土壤脲酶受汞毒害作用更强，当汞浓度分别为6.00和14.79mg/kg时即达到严重污染；而转化酶对汞的敏感性较差；培养时间对土壤酶与汞浓度间关系影响较小。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。