You'll have difficulty trying to get hold of a bike.

Very bad. I have difficulty in breathing.

糟透了, 我呼吸有些困难.

This paper deals with the periodic optimal control governed by a degenerate nonlinear diffusion equation.

摘要研究由退化非线性扩散方程所支配系统的周期最优控制问题.

In this paper, A modified Dennis scheme for the steady-state convection-diffusion equation is proposed.

本文提出了求解定态对流扩散方程的修正Dennis格式.

The transposition and attenuation actions of flood wave are defined by of convection and diffusion equation.

根据对流扩散方程,从数学上定义了洪水波的推移和坦化作用.

The concentration field of suspended sediment is calculated by using diffusion equation.

用剖面二维悬移质扩散方程求解浓度场.

Besides, the effect of diffusion coefficient on interlaminar shear stength of composites is investigated.

此外, 还研究了扩散系数对芳纶纤维复合材料的层间剪切强度的影响.

The effective diffusion coefficient and rate constant of intra particle transport were calculated.

求出了颗粒内有效扩散系数和颗粒内扩散速率常数.

STUDIES OF THE REACTOR FILLED WITH ORIGINAL PARTICLE CATALYST AND EFFECTIVE DIFFUSION COEFFICIENT.

浸入式折光计测定啤酒原麦汁浓度.

The hydrogen diffusion coefficient had the different performance in different stages of cycling test.

研究发现,合金在循环曲线各个阶段的氢扩散系数均不相同.

Diffusion coefficient of copper in barrier coating is a considerable parameter for evaluating barrier ability.

铜在防渗铜镀层中的扩散系统是评价镀层防渗铜能力的重要参数.

A two-dimensional numerical method is presented for predicting the chloride diffusion coefficient of cement paste.

提出了水泥石氯离子扩散系数预测的二 维 数值方法.

It indicates the pore pressure was significantly affected by the permeability coefficient and the diffusion coefficient.

指出混凝土的渗透系数或扩散系数对于孔压有着重要影响.

The effects of hydrogen concentration and other impurities on the hydrogen diffusion coefficient were also discussed.

最后讨论了氢浓度和其它杂质对氢的扩散系数的影响.

The diffusion coefficient, transfer coefficient and exchange current are calculated.

计算了扩散系数 、 电还原的传递系数和交换电流密度.

A dilapidated building that shoulders out to one side.

一座向一边倾斜的危险房屋.

Ethical relativity and class nature make nuclear weapons fall into the ethical dilemma.

道德的相对性和阶级性使核武器陷入道德的两难境地.

Ethical Dilemma: The Key Employee.

职业道德上两难处境: 关键性的雇员.

Focus: what ethical dilemma is facing Chinese managers?

焦点: 中国经理面临的什么样的“道德困境”?

What constitutes an ethical dilemma, when ethics themselves are in question?

当道德本身都很难量化时那么什么又是道德困境 呢 ?

Such incidents place the reporter or photographer in an ethical dilemma.

这样一些事件使得记者或摄影师处在道德两难的境界.