向极的

Anaerobic synecology of the hydrogen-producing fermentation system was investigated under certain test condition in this thesis. In the continuous flow system of anaerobic hydrogen-producing fermentation, the succession of hydrogen-producing acidogenic microbiology may be regressive process. By regressive process we means that the original community getting from nature which structure being complex with a high ability would degenerate gently to a certain climax community which structure being simple with less ability.

产氢发酵系统的微生物群落生态学研究证明，在连续流发酵产氢反应系统中产氢产酸发酵细菌群落的演替过程，是在人为控制的生境条件下，微生物从自然群落这种稳定性大、组成及生化反应过程复杂的生态群落，向稳定性小、组成和生化反应过程相对简单的某一产酸发酵顶极群落进行的"逆行演替"。

The horizontal north vector is tangent to the earth and hence the rotation is the result of earth curvature.

由于地球旋转而引起的离心力随纬度θ到地轴距离的变化而变化以及由极向扁率引起的地球半径的变化而对重力资料进行的校正。

We mainly detected the TOF and angular distribution of photofragment, and get the anisotropy parameter β and the translational energy distribution. In addition, we calculated the geometries of the ground states, the excited states and the triplet excited states, and the transition electric dipole moments. According to these, the dissociation lifetimes of some molecules are calculated.

主要是探测了光解碎片的时间飞渡谱和角分布并通过前向卷积方法拟合得到了各向异性参数β和光解碎片的平动能分布；此外还用从头计算方法计算了反应物分子的基态、激发态、三重激发态的平衡几何构型和分子的跃迁偶极矩并据此计算了一部分分子的解离态寿命。

The distressing explanation she had to make to harriet, and all that poor harriet would be suffering, with the awkwardness of future meetings, the difficulties of continuing or discontinuing the acquaintance, of subduing feelings, concealing resentment, and avoiding eclat, were enough to occupy her in most unmirthful reflections some time longer, and she went to bed at last with nothing settled but the conviction of her having blundered most dreadfully.

想到她不得不向哈里特作出令人苦恼的解释，想到可怜的哈里特因此而感到痛苦，想到未来会面时必然感到难看，想到维持或者不在维持朋友关系，想到要控制住感情，隐藏起憎恨，避免正面相见打招呼--这些想法长时间萦绕在她的脑际，让她感到极不愉快，最后上床的时候，她什么结论都没有作出。只有一点是确信无疑的，那就是她犯了个极为严重的大错误。

The quantities of starch grains in the two"cells"in micropyle part of embryosac gradually decrease and become unclear.With the further development of embryosac the starch grains in the central cell and antipodal cell disappear in succession,however,the egg cell does not.

在准极核移向胚囊中部前后，不同的功能性细胞有不同的表现，珠孔端的两个&细胞&淀粉粒数量逐渐减少并变得不明显，随着胚囊的进一步发育，其中中央细胞和反足细胞内的淀粉粒相继消失，但卵细胞内却一直保存着。

This results in a higher possibility for the components to enter the unstable demixing gap after the rapid phase separation of the system has taken place.Therefore,a bicontinuous structure is easily formed for CA membrane. For the systems of ScCO_2/toluene/PSt and ScCO_2/solvent/PVB,the increase of temperature or decrease of pressure leads to the binodal curves shifting toward the polymer/solvent axes,and thus results in the decrease of miscibility gap.The membrane toplayers of ScCO_2/solvent/PVB systems are dominated by the equilibrium thermodynamics,while the formation of membranes sublayers is the result of the combination of the equilibrium thermodynamics and membrane formation kinetics.

以下时由双节线、旋节线之间构成的亚稳互溶分相区很窄，使得该体系在快速分相后其组成变化进入旋节线内不稳分相区的可能性极高，从而易导致CA膜形成双连续结构；温度升高或压力减小均可导致ScCO_2/甲苯/PSt与ScCO_2/溶剂/PVB两种铸膜体系的双节线向聚合物/溶剂轴一侧靠近，均相区减小；ScCO_2/溶剂/PVB体系的膜表面结构形成主要受平衡热力学过程的控制，而膜的截面结构是其平衡热力学与扩散动力学共同作用的结果。

Based on the dynamic equation, the transport and acceleration of out-flowing ionospheric ions in the magnetosphere are studied by means of finding the ion distribution function. They include two parts: the study of static ion distribution with analysis and numerical compute; the study of ion acceleration by induced electric feild in the period of dipolarization of taillike geomagnetic lines in the substorm expansion phase with the numerical simulation of the ion distribution function.

本文在磁层中上行离子的加速与传输理论研究领域中，采用动力论方程，用求解离子分布函数的方法来研究问题：(1)用解析求解和数值计算的方法，对上行离子在不同Kp指数条件下磁场位形中的定态分布进行了研究；(2)用数值模拟计算分布函数的方法，对上行离子在亚暴膨胀相磁场向偶极形驰豫过程中受磁尾的感应电场加速进行了研究。

It is forecast that NARI will strengthen at less than climatological rate before crossing the ridge axis due to the combined effect of improving poleward outflow and restricted equatorward outflow, together with generally warm sea surface temperatures and moderate vertical wind shear.

受到转好的极向辐散通道、被阻碍的横向辐散通道、较暖的海水及中等的垂直风切变的影响，百合可於未来 48 小时稍为增强至一级台风。

Summing up the reasons for the above situation is that there is the possibility of transformation between the status of two contacts (Cassie state and the Wenzel state) on super-hydrophobic surface, which can be promoted in different external conditions.

观察水在制备的超疏水涂层表面冷凝和蒸发情况，发现液滴可以在极易滚落和被紧紧粘在表面上无法下流，这两种状态之间相互转化，出现上述现象的原因可能在于超疏水表面上的两种接触状态（Cassie态和Wenzel态）之间存在着相互转化的可能性，不同的外界条件可以促使向不同方向的转化。

As the forward velocity increasing, the windrowing angle would be decreased, but the effect of forward velocity on windrowing distance was not obvious. The windrowing angle and distance of multiple sugarcane stalks would be smaller than those of single sugarcane stalk, but the maximum range of windrowing angle and distance of multiple sugarcane stalks would be greater than those of single sugarcane stalk. In order to sugarcane stalks outward windrowing, holding height must be within ±100mm of height of sugarcane mass center. As holding height increasing, the windrowing distance would be decreased, but the effect of holding height on windrowing angle was not obvious.

随着夹持输送装置输送速度的增大，甘蔗铺放角和甘蔗铺放距离也随着增大，随着机车前进速度的增大，甘蔗铺放角是减小的，而前进速度对甘蔗的铺放距离影响不大；多根甘蔗的铺放角和铺放距离要比单根甘蔗小，铺放角和铺放距离最大极差要比单根甘蔗大；入口夹持点高度应在甘蔗质心高度±100mm范围内为宜，以保证甘蔗能向机车外侧铺放，随夹持高度的增加，甘蔗质心位于夹持点下方的距离增大，甘蔗铺放距离减小，而夹持高度对甘蔗铺放角影响不大。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。