查询词典 narrow channel

The 20S catalytic core of the 26S proteasome has the shape of a barrel made of four rings which are composed of seven differentαsubunitsα_1-α_7 at two outer rings and seven differentβsubunitsβ_1-β_7 at two inner rings at which the catalytic sites locate. Three of theβsubunits contain proteolyses sites, which are sequestered in the hollow interior of the 20S particle. Substrates enter the 20S through a narrow channel formed by theβsubunits, whose N-termini, depending on their conformation, can either obstruct or allow substrate entry and thus function as a gate. This entry channel is narrow and only permits passage of unfolded, linearized polypeptides.

哺乳动物26S蛋白酶体是由一个20S催化颗粒(catalytic particle，CP)和两个19S调节颗粒(regulatory particle，RP)组成的ATP(adenosine-triphosphate，ATP)依赖性蛋白水解酶复合体。20S CP是26S蛋白酶体的催化核心，它是由4个圆环堆叠形成的桶状复合物，其中两侧外环每个环是由α_1-α_7亚基组成，两个内环每个环是由β_1-β_7亚基组成，4个环的中央形成一个狭窄的内腔。2个β内环形成了20S CP的催化中心空腔，其内壁为催化活性位点所在地；外侧α环中心的孔道是底物到达催化中心空腔的通道，一般被α亚基上的N末端所封闭，阻止胞内非目的靶蛋白进入20S CP内被降解破坏。

They were sensitive to price and had narrow channel for information. The products of urban sightseeing and shopping, demonstration of agri-science and technology, the visiting of eco-village and religion tourism should be the main types in the market. The Handan's peasant should be the prior origins spatially and the group of middle age and middle incomes should be put the emphases on. The marketing strategy including of product, propaganda, price, service, was put forward.

提出邯郸农民旅游市场拓展应将重点放在都市观光购物、农业科技演示学习、生态文明村参观、宗教旅游等产品的设计与开发上；认为邯郸市农民是最主要的目标人群，开发重点应放在中年人市场和中等收入阶层；最后提出了农民旅游市场开发在产品、宣传、价格、服务4个方面的营销策略。

In this paper, the numerical method for the problem of flow and heat transfer in rectangular narrow channel is researched.

本文对矩形窄缝内流动与换热的数值计算方法进行了研究。

Therefore, how to improve narrow channel manoeuver safety is always a hotly discussed question in the navigation circles.

如何有效提高狭水道操纵安全水平一直是海运界思考的问题。

Sloop was making a series of very short tacking manoeuvers as it made its way gingerly up the narrow channel.

一部小型单桅纵帆船小心谨慎地向狭窄航道驶去时，做出了一系列非常短的抢风转变航向的演练。

Figure 1: Relationship between the width of the buccal channel and resistance to flow of saliva: left: wide channel, rapid flow, poor retention; right: narrow channel, slow flow, good retention After Basker,R.M.

图1：颊侧间隙宽度与抵抗唾液流动的关系：左：间隙宽，流速快，固位差；右：间隙窄，流速慢，固位好。

A calm, narrow channel, lined by low peaks wrapped in 40ultra-white glaciers, it is strewn with huge 41tabular icebergs and smaller bergy bits.

平静而狭窄的杰拉许海峡两边矗立着被白得超乎寻常的冰川包裹的低矮山峰，水面上点缀着巨大的平顶冰山和浮冰碎片。

Pressure drop of two-phase flow in lunate channel is related to heat flux, mass flow rate and the gap of narrow channel.

可视化的实验结果为狭缝通道内沸腾传热机理和模型的分析提供了可靠的依据。

Under the same experimental condition, boiling heat transfer of nitrogen in lunate narrow channel performs better than that in circular narrow channel.

弦月形通道与环缝通道相比，在相同的条件下，弦月形通道显示出更好的换热效果。

Based on the analysis of physics course of heat transfer, the mathematical model of single-phase flow in the rectangular narrow channel is proposed. And the boundary conditions are given to get the unique numerical result. The finite volume method is used to found the discrete scheme of equations. According to the flow of SIMPLER arithmetic, the computing program is developed and the correctness of program is validated.Then the program is used to solve the problem of flow and heat transfer in rectangular narrow channel.The stable two dimension velocity and temperature fields in rectangular narrow channel and plate fuel are obtained.

在明确窄缝流道及燃料板换热物理过程的基础上，建立了描述矩形窄缝内单相流动与换热问题的数学模型，并给出了合理的边值条件；然后利用有限容积法对方程进行离散，根据SIMPLER算法的流程编制了模型求解程序；在验证程序正确性的基础上，对矩形窄缝流动与换热问题进行了求解，得到了矩形窄缝流道和板状燃料元件内部温度场、速度场的二维分布。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。