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In order to study the intake air flow characteristics in four-valve diesel engines, in this dissertation hot-wire anemometer and PIV twodimension instantaneous measuring technique are used. Extensive experimental study on two intake valve exit flow fields and longitudinal section flow field in cylinder are performed for different type of diesel engines. Great researching progress have been made on the interaction between two intake ports, and the formation process of in-cylinder swirl and flow field structure of cross and longitudinal section for four valve diesel engines. These results are presented in China for the first time and without such kind of research work reported abroad as detailed and deepgoing as this dissertation. The author designs and makes a set of hot wire measuring velocity device to measure the velocity distribution around the intake valve annulus and the cross section flow field in cylinder.

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In first, a new short time formula of one dimension heat conduction differential equation, based on the theory of one dimension transient method, is presented for thermophysical property measurement of wood. The result of testing on red pine and larch wood arc satisfied by new method.In succession, the relationship between heat conductivity of wood and moisture, density, porosity, temperature and grain is studied experimentally in the range from 25 to 100℃. The result shows that, the heat conductivity is in direct proportion to density. but in inverse proportion to porosity. The heat conductivity of air-dried wood increased probably linear with the temperature rising. And that heat conductivity along the grain of wood is higher than that cross the grain. The former is 1.8 or 2 times of the latter.

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For understanding the workability and precision of these prediction equations, at first this study not only simulates the MHs of Taipei, Taichung, Kaoshung cities and Kao-ping area but also compares these results with meteorological models of CLAMET and TPAQM. And the comparisons show the high correlation (up to 0.8) between them. When the results of MH prediction equations model are compared with TPAQM, they get higher or lower values than TPAQM. The reasons are that Holzworth method can not concern about the warm and cold advections effect and the upper air data used do not get enough finer space-spread. About the results spread on the domain of my model, they show more different MH fields between the land and the sea around and get more sharply change of the land MHs on daytime than TPAQM.

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On the one hand, the frost layer increases the thermal resistance in the airside, on the other hand, as the frost continued to grow, it restricts the airflow in the evaporator and also insulates the cooler surface from the air.

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The sea above the city is reflected on the shattering white night; fire from the chimney pokes through the cloud, burning the flag red; sky-elevator is ascending towards the sun, trembling; a missile flies a trajectory of no return; the river flows through the secret tunnel in the palace and warms up the buildings along its banks; a lonely knight strolls across the stretched-out villages; angels and madmen are having a duel among the ruins of collapsed buildings and the abandoned fields; the astute businessmen are busying on the container dock; a batwoman is contemplating in the air between skyscrapers; the kind beast has its desire for love realized...

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On the first day, when, getting up early in the morning, he came out of the shed into the dawn, and saw the cupolas and the crosses of the New Monastery of the Virgin, all still in darkness, saw the hoar frost on the long grass, saw the slopes of the Sparrow Hills and the wood-clad banks of the encircling river vanishing into the purple distance, when he felt the contact of the fresh air and heard the sounds of the rooks crying out of Moscow across the fields, and when flashes of light suddenly gleamed out of the east and the sun's rim floated triumphantly up from behind a cloud, and cupolas and crosses and hoar frost and the horizon and the river were all sparkling in the glad light, Pierre felt a new feeling of joy and vigour in life such as he had never experienced before.

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The side of the air inlet (14) closest to the outer edge of the wings (13) on the fan wheel (12) is arranged at an angle of 10 DEG to 60 DEG in relation to the outer edge of the wings (13) on the fan wheel (12) to reduce the amount of sound generated.

最靠近風扇輪(12)的翼片(13)的外邊緣的空氣入口(14)的側面(17)設置為相對于風扇輪(12)的翼片(13)的外邊緣成10°至60°的角度jiuse200，以減少產(chǎn)生的聲音量。

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Switch can be adjusted back up hand-held point of view (maximum 80 degrees) and leg drop angle (100 degrees);◆ foot bed lowest point from the ground 130mm, the highest point of the bed from the ground 680mm; also elevated bed of different heights;◆ bed in back with plexiglass plate, the user can seat on the bed for X-ray;◆ aluminum fence, can also choose to use push-pull PP flip rail or fence;◆ lift back, the waist angle of tilt, to prevent the sliding body;◆ by about 2 degrees of seat angle;◆ foot can be bent 100 degrees and can easily get out of bed from the bed and sat up and on;◆ foot horizontal position may rise higher than the height of 120mm;◆ with quiet casters with brakes and can be locked and lifted;◆ durability, operational quality, improved operating performance moving bed;◆ equipped with ABS headboard can be instantly demolished;◆ electric device of high quality fully enclosed permanent magnet DC control system;◆ low noise, high safety, long life;◆ new materials with polyester fiber mattresses;◆ can also choose to use low-rebound double-foam mattress or mattress waterproof material;◆ has good air permeability and durability.

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