查询词典 barrier

In the absence of a large enough electric potential difference across the LED leads, the junction presents an electric potential barrier to the flow of electrons.

在缺乏一个足够大的电势差全国率领的线索，交界处提出了一种电动势垒，以流动的电子。

This dissertation includes two aspects of work: the first is about the potential barrier and the dynamical mechanism of heavy-ion fusion reactions, and the second is about the strongly damped reactions of very heavy nuclei.

本论文基于改进的量子分子动力学模型研究了以下两个方面的工作：第一方面，对重离子熔合势垒和熔合反应动力学机制进行了研究。

We apply these set of rules to study three kind of typical quantum problems including harmonic oscillator, double well potential and impulse barrier penetration.

利用这套规则，我们研究了谐振子，双势阱和脉冲型势垒的透射这三种量子力学中典型问题的格林函数。

We have extracted the KBT layer's width from the experimental analysis and we have found a simple model to express its mismatch properties based on the parabolic potential barrier.

我们从实验中萃取了KBT层的宽度加以分析，并且运用抛物线能障理论提出了物理模型来呈现它的不匹配特性。

Dongfeng Yingjun EQ5086STL40D3A Highway Barrier Cleaning Vehicles This model is a special-purpose vehicle that DFAC has developed for our company under cooperation between DFAC and our company, which is a unique type of vehicle for promotion of power take-off by a single engine and has been announced by the National Development and Reform Commission (the 150th batch).

此车型是我公司与东风集团东风汽车股份有限公司合作，东风汽车股份有限公司为了我公司开发的这种独特的发动机单机取力型式的推广而开发的一款专用车，目前已获国家发改委公告（第150批）。

Patent application have been submitted to the authorities of the state for its power output design of single engine power take-off and combined transmission gearbox, highway barrier cleaning technology and appearance of the whole vehicle.

此车的发动机单机取力加组合式变速器的动力输出型式、刷洗护拦的方式及整车外型已申请国家专利。

Through the experiments on hydration of AH in the following sulphate（Li_2SO_4、MgSO_4 、 Al_2(SO_4)_3 、MnSO_4 、CuSO_4 、CoSO4 、CdSO_4 、ZnSO_4 、NiSO_4 、FeSO_4）, dissoluble sulfate hydrate origining from hydration process of AH affects it's hydrous rate, hydrous rate of AH does not connect with Z/R of cation in stimulation, theory that Z/R affect hydrous rate of AH does not exist. Third, hydration of AH in dissoluble sulfate complies with dissolve-nucleate -grow theory, concentration of Ca~2+ from dissolving of CaSO_4 is higher than one of CaSO_4·2H_2O, calcium sulphate dihydrite gets a motivity of crystallization. dissoluble sulfate takes the following function: double-salt or dissoluble sulfate hydrate from hydration of AH in it becomes heterogeneous particle and a kind of nucleation catalyzer, and reduces surface barrier when DH becomes crystal because the crystal of DH precedently appears in uneven place. Results indicate hydration of AH does not conform with double-salt theory, but it conform with this mechanism: dissolve-nucleate-grow, formation of DH is an uneven nucleation and crystalizaion process.

通过对CaSO_4在Na_2SO_4 、K_2SO_4 、Rb_2SO_4 、Cs_2SO_4 、(NH_4)_2SO_4溶液中水化过程，以及CaSO_4·2H_2O、CaSO_4与以上硫酸盐反应速度、产物的研究，说明复盐理论不正确；CaSO_4在（Li_2SO_4、MgSO_4 、 Al_2(SO_4)_3 、MnSO_4 、CuSO_4 、CoSO_4 、CdSO_4 、ZnSO_4 、NiSO_4 、FeSO_4）溶液中水化，水化过程中硫酸盐水合物的析晶影响着无水硫酸钙水化，与激发剂阳离子Z/R值大小无关，阳离子的Z/R参数影响水化率的规律并不存在； 3、无水硫酸钙在可溶性硫酸盐中的水化按照溶解-成核-生长理论进行，CaSO_4达到溶解平衡时Ca~2+的浓度大于CaSO_4·2H_2O溶解平衡的Ca~2+的浓度，CaSO_4·2H_2O获得结晶的驱动力，可溶性硫酸盐起到形成晶核的作用：水化过程与CaSO_4生成复盐或析出水合物所形成的细小物相，作为异质微粒使母相中存在不均匀性，这些不均匀性有效地降低成核时的表面能位垒，使CaSO_4·2H_2O晶核优先地在这些具不均匀性的地方形成，因此这些物质起成核催化剂作用。

Then again, Europe's predilection for privacy could still emerge as a big barrier.

然后，欧洲对隐私的嗜好仍是一个很大的障碍。

Still,the preferred stock should be paid more attention to that maybe a barrier to company's innovation and development.

但是，必须引起注意的是有时它也可能成为阻止公司变革、发展的障碍。

In past years, the greatest usability barrier was the preponderance of cool design.

在过去的几年里，最伟大的可用性壁垒是奇酷无比的设计所具有的优越感。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。