transfer coefficient
- transfer coefficient的基本解释
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转换系数
- 相似词
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Some parameters such as Indoor radiation heat transfer, convective heat transfer, MRT, OT, radiation heat transfer coefficient, convective heat transfer coefficient, and PMV-PPD were calculated under a steady condition. From the result, we can conclude, when operation under the combination system and worst-case test, if floor temperature is about 21℃, supply air temperature is 21℃, air velocity is 1m/s, the equlvalent coefficient of heat transfer between floor temperature and OT is 13.6w/m2k, where 5.68w/m2k is equlvalent coefficient of radiant heat transfer, 9.48w/m2k is convective heat transfer coefficient. And when air velocity is higher, supply air temperature is lower, the radiant heat transfer between floor and others is lower. In the whole experiment, the floor temperature was keeping above the indoor air dew point, and condensation was not appeared.
通过分析计算,在复合式系统运行中,最不利室外环境下,当地面温度维持在21℃左右,送风温度21℃,送风风速1m/s,此时地板对作用温度的当量综合换热系数为13.6w/m2k,其中当量辐射换热系数为5.68w/m2k,对流换热系数为9.48w/m2k,并且送风速度越高、送风温度越低,地板与其他壁面的辐射换热量有一定程度的降低,但总供冷量增加;在整个实验中地板温度始终高于地板上层空气的露点温度,并未发现有结露现象;室内空气温度梯度能满足0.1m-1.1m的温差小于3℃的要求,并且适当提高送风温度可以进一步提高人体的热舒适性。
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Furthermore, transfer coefficient between total content and variable speciation including acid-soluble/exchangeable, reducible, oxidisable fraction of heavy metals are different. Transfer coefficient of total Cr is 0.65 in tailings area, but that of variable speciation is 0.26. In contrast with Cr,transfer coefficient of total Ni is 0.26, but that of variable speciation is 0.67. The similar characteristics on Pb and Zn in cultivated soil, namely, transfer coefficient of total Zn is high, but low for variable speciation, which is reversed for Pb. Transfer coefficient of total content and variable speciation in abandoned soil are low compared with above two fields soil, especially, variable speciation of Cu and Ni are not transported almost down soil profile.
重金属总量和活性态(包括弱酸提取态、可还原态、可氧化态)迁移率也表现出很大差异,尾矿区土壤Cr总量迁移率较高为0.65,而其活性态迁移率较低为0.26,Ni与Cr迁移特征完全相反,总量迁移率为0.26,而活性态迁移率为0.67;农田土壤中Pb总量迁移率低而活性态迁移率高,Ni与Zn特征相似,总量迁移率高而活性态迁移率相对较低;大棚地土壤中重金属迁移率均较低,Cu和Ni活性态几乎未发生向下迁移。
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From the results of different coefficient and similar coefficient,Schima superbashowed high total mean different coefficient and low total mean similar coefficient;Castanopsis chinensis showed high total mean different coefficient and media totalmean similar coefficient;Cryptocarya chinensis showed low total mean differentcoefficient and high total mean similar coefficient.
从相异系数和相似系数的计算看,荷木总平均相异系数最大,总平均相似系数最小;锥栗总平均相异系数大,总平均相似系数居中;厚壳桂总平均相异系数最小,总平均相似系数最大。
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coefficient of cubic expansion; cubical expansion coefficient:体胀系数
"coefficient of corrosion","腐蚀系数" | "coefficient of cubic expansion; cubical expansion coefficient","体胀系数" | "coefficient of diffusion; diffusion coefficient","扩散系数"