对流引起的

Integrated gasification combined cycle is one of the trends of clean coal power generation technology. However, that alkali metal vapors contained in the syngas which are generated from coal gasifier easily deposit on the surfaces of convectional syngas cooler will not only lead to slagging, but also will cause high-temperature corrosion of gas turbine blades.

整体煤气化联合循环(integrated gasification combined cycle，IGCC)发电技术是洁净煤发电新技术的发展方向之一，但煤气化释放出的碱金属蒸气易在对流废锅中形成污垢，而且会引起燃气轮机叶片的高温腐蚀。

Statistical analyses are made of morning sounding data and ground flash data from June to August 1997 and 1998, the latter was obtained with a 3\|station lightning direction finder network installed in Pingliang.

引言 对流风暴中一般都存在大量的雷电活动，雷电特别是地闪常常造成人员伤亡、电力系统的损坏、引起森林火灾等，造成的损失越来越严重。

These initial successes spawned much interest in fluidization.

这些初始的成功引起对流态化的很大兴趣。

The convective heat transfer of upper surface of PGA is enhanced due to flow separation and reattachment caused by mounting obstacle.

由于安装台阶引起气流在PGA封装上表面的分离和再附着，导致对流换热的强化。

By thermodynamically and dynamically calculating and analysing ,a new growth mechanism of spherical graphite has been proposed ,that is,the spherical graphite does not grow inwardly,but grow outwardly and when spherical graphite grow outwardly carbon atoms come into and fill-up the entocoele of spherical graphite by the diffusing way.

通过对石墨球最终表面的形态进行分析，可以获得气泡的表面并不是石墨球的最终表面，石墨球表面主要由于受到石墨球表面各微晶长大速度不均匀性、铁水中的三大起伏、微量元素与碳原子的竟相吸附、由于浓度梯度和温度梯度所引起铁水的对流等各种因素的综合影响结果使其表面成为凹凸起伏的形状

The equatorward movement of a middle latitude trough-front system into the South China may give rise to the retreating eastward of the subtropical high ridge over the South China Sea.

1994年南海夏季风建立于5月第一候，利用MM5成功地模拟了这一过程，并通过敏感性试验，讨论了中纬度系统和中南半岛及其附近地区的积云对流对夏季风环流建立的影响，结果表明：（1）南下接近副热带一定强度的中纬度槽－锋系统的强迫，可引起南海地区副热带高压脊的减弱东撤。

The present experiment demonstrated that the unhomogeneity of surface tension induced by gradient magnetic field near the surface of liquid could lead to surface deformation, the quantity and direction of deformation are directly related to the distribution of gradient filed, and a new way to the research of the kinetics of Buoyant-Thermcapillary Convection is proposed.

得到了结论：液体表面附近处的梯度磁场将引起表面张力的不均匀而使其发生变形，变形量及方向与磁场强度和梯度的空间分布有直接关系，为浮力-热毛细对流的相关研究提供一种新的途径。

The break-off and cumulates of subducted slab would give rise to the upwelling of mantle material and then thermal -chemical erosion of lithospheric roots happened.

俯冲板片断离及在深部地幔中的堆积，必然引起地幔物质的对流，从而产生地幔羽，上升的地幔羽对岩石圈底部发生热侵蚀和化学侵蚀，并在薄弱地带上升喷出地表或侵入在地壳浅部，形成了广泛而强烈的岩浆作用。

The formation and development of the meso-β scale convective cloud clusters resulting in rainfallwith different intensities over the middle reachers of the Yangtze River are analysed.

本文对发生、发展在长江中游地区两个中-β尺度云团引起不同强度的降水，进行了对比分析，弄清它们之间的异同，进一步探讨了中-β尺度对流云团产生强降水的条件，从而为难以预报小范围的暴雨提供一些物理依据。

Results show that a combustion technique by increasing upper half counter offsetting auxiliary airs progressively and biasing superheater division panels can eliminate gas imbalance and heat deviation , decrease slagging on furnace and reduce NOx emission effectively.

某300MW 逆时针切向布置燃烧器锅炉在不同二次风反切方式下分隔屏向左偏置一定角度时，炉膛、烟道气流流动特性模型试验和数值模拟的研究结果表明：燃烧器上半部分二次风递增反切分隔屏偏置一定角度的燃烧技术能显著改善烟道偏流现象，可防止过大热偏差引起高温对流受热面超温、爆管，同时能降低炉内燃烧器区域结渣程度、减少NOx 生成，且改造方便、效果明显。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。