查询词典 air-hammer

The simulation results show that staged air can significantly reduce tangential circle diameter of upper parts of furnace and lower heat transfer difference of horizontal gas flue; the field test results show that the proper ratio of staged air in the total air can make tubes wall temperature distribution of high-temperature superheater uniform, and tubes' peak temperature lowered 5~10℃.

模拟计算结果表明炉内分级送风对于减小炉膛上部切圆直径、降低水平烟道内的热偏差作用明显；现场试验结果表明，适度增大炉内分级送风比例使高温过热器管壁温度分布更均衡，峰值温度降低5～10℃，使受热面运行安全性得以提高。

During the siege of Dien Bien Phu, the Vietminh moved in heavy antiaircraft artillery formations and succeeded in inflicting air denial upon the French; by May 1954, just before the collapse, French fighters and bombers (let alone transports and liaison airplanes) could not operate over the valley without taking prohibitive losses.18 American fixed-wing aircraft losses in Southeast Asia, while not large in the context of the entire SEA air effort, were certainly not inconsequential, and the introduction of the shoulder-fired SAM during the 1972 North Vietnamese spring offensive added a new problem for tactical air planners.

在围攻殿边府的战斗中，越盟调来了重型防空火炮部队，并成功对法国人造成了空中阻隔；在1954年5月底，也就是法国人崩溃的之前，法国战斗机和轰炸机没有付出无法接受的损失是无法在山谷上空作战的。

The invention discloses an hot water production method complementary of air heat source and steam exhaust exhaust heat, is characterized by employing an air source heat pump to heat up tap water by temperature of 8-12 DEG C; recycling steam exhaust in washhouse to reheat up the hot water from the air source heat pump by temperature of 55-70 DEG C, and feeding the hot water into a hot water reservoir for standby.

本发明公开了一种空气热源与乏汽余热互补的热水制造方法，其特征在于，采用空气源热泵加热自来水，使自来水的温度升高8～12℃；再回收洗衣房内的乏汽将空气源热泵输出的热水进行二次加热，并将其升温至55～70℃，将所得热水送入热水蓄水池备用。

The solutions were found to be good agrees with experimental results. The transfer characteristic of air dry/wet bulb temperature and spraying water temperature were discussed. The LMTD method based on this mathematical model is applicable to design and verify for the plate wet air cooler. The ratio of the wet bulb heat transfer coefficient to the heat transfer coefficient under air-cooled conditions was investigated theoretically and experimentally. The relative errors of the ratio between theoretical and experimental valves are small than 7 percent.

分别得到了平行流型式微分方程组的解析解与交叉流型式的近似解析解，实验验证了该解析解具有较高的计算精度；探讨了空气干湿球温度与喷淋水温的迁移特性；分析得到基于湿球温度迁移模型的对数平均温差法在湿式空冷器的设计与校核计算中是适用的，给出了空气湿球换热系数与空冷时空气对流换热系数比值的理论与实验确定方法，比值系数理论值与实验值比较最大相对误差小于7％。

The device, from above to below, includes a floor decoration layer, a phase-changing material layer, an air duct, a radiation protection film, a thermal insulation layer and a floor base layer in turn; keels are arranged between the floor decoration layer and the floor base layer, at least a heat supply waterpipe or a electrical heating film are buried in the phase-changing material layer between adjacent keels; a wind gap is arranged at both ends of the air duct to communicate with indoor air.

该装置自上而下依次包括地板装饰层、相变材料层、空气通道、防辐射膜、保温层和地板基层；在地板装饰层和地板基层之间设有龙骨，在相邻龙骨之间的相变材料层中埋有至少一根供热水管或一个电加热膜；在空气通道的两端设有风口与室内空气相通。

That important Beijing He central authority air-conditioning is kept in repair is special field be engaged in every brand after central authority air-conditioning sells keep an unit in repair , the company maintains from setting up so far consistently devote self to being that the consumer provides high grade , reliable (central authority air-conditioning , the country who designs that installation , the windway wash , add a fluorine the to maintenance a coordinated process service company) possessions to be maintained , assembles personnel It both works the grade certificate issuing.

北京大贺中央空调维修是专业从事各品牌中央空调售后维修单位，公司自成立至今一直致力于为用户提供优质、可靠的中央空调维修、设计安装、风道清洗、加氟保养一条龙服务）公司所有维修、安装人员都有国家劳动部颁发的等级证书。

The aircraft also has six (four under-wing and two wingtip) pylons to carry various air-to-air and air-to-ground weapons.

飞机也有六（四个在机翼下和二个在翼尖）挂架携带各种不同的空对空和空对地武器。

In order to detect the air pollution caused by acarida mites in some special circumstances dust sampler and air-drifting sampler were employed to detect acarida mites in the air, eight species of acarida mites were separated, which belong to 3 families six genus.

为探讨肺螨病的免疫诊断方法，笔者应用IFAT、IHA、Dot-ELISA检测了肺螨病患者血清螨特异性Ig水平，结果显示上述几种方法均具有很好的特异性和敏感性，对于肺螨病的辅助诊断都具有一定的应用价值。

It also improved the radar, expanded the fire control and stores control computers, allowed Block 15 aircraft to fire the AGM-119 Penguin antishipping missile, the AGM-65 Maverick air-to-ground missile, and the AIM-120 advanced medium-range air-to-air missile, or AMRAAM.

它还改进了雷达，扩展了火控和外挂控制计算机，允许第15批次的飞机发射AGM-119'企鹅'反舰导弹，AGM-65'小牛'空对地导弹，还有AIM-120先进中距空对空导弹，也就是AMRAAM。

Pre-operative audiometric testing revealed a mean air conduction pure tone average of 51.93 dB and a mean bone conduction PTA of 23.17 dB. The mean post- operative air conduction and bone conduction PTA were 36.59 dB and 24.23 dB, respectively. The mean pre- and post- operetive air-bone gaps were 28.76 dB and 12.36 dB, respectively, with a gain of 16.50 dB. Sixty-eight percent of patients closed their ABGs to within 20 dB.

术前临床测试平均气导51.93 dB，平均骨导23.17 dB；术后平均气导36.59 dB，平均骨导24.23 dB，术前、术后骨气导差距分别为28.76 dB和12.36 dB，骨气导差距改善了16.40 dB，68%的病人骨气导差距缩小到20 dB以内，无听力下降者。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。