查询词典 anal fin

Large food fish of warm waters worldwide having long anal and dorsal fins that with caudal fin suggest a three-lobed tail .

世界各地温暖水域中的大型食用鱼，背鳍和臀鳍很长象有三个分叶的尾巴。

In April: yellow fin tuna, black fin tuna, autochthonous wahoo and odd billfish.

四月：黄翅金枪鱼，黑翅金枪鱼，本地鲅鱼和旗鱼。

The heat transfer coefficients and pressure drop data for different fin pitch F p and fin height F h were reported in terms of Colburn j -factor and Fanning friction factor f , as function of Re Lp .

在风洞试验台上对20种不同结构参数的扁管百叶窗翅片进行了传热和流动阻力性能试验，分析比较了翅片间距和翅片高度对其表面对流换热系数和空气阻力性能的影响。

The effects of space of fins, number of tube rows and relative humidity of incoming air on airside performance of wavy fin with hydrophilic coating under dehumidifying conditions were experimentally explored for seven wavy fin-and-tube heat exchangers with hydrophilic coating. The Colburn factor and the Fanning friction were applied to describe airside heat transfer and friction characteristics, respectively.

为了确定翅片间距、管排数和入口空气相对湿度等参数对析湿工况下带亲水层波纹翅片空气侧特性的影响，对7个带亲水层的波纹翅片管换热器进行了试验研究，并分别以Colburn换热因子和Fanning摩擦因子来反映空气侧换热和压降特性。

AbstractThe effects of space of fins, number of tube rows and relative humidity of incoming air on airside performance of wavy fin with hydrophilic coating under dehumidifying conditions were experimentally explored for seven wavy fin-and-tube heat exchangers with hydrophilic coating. The Colburn factor and the Fanning friction were applied to describe airside heat transfer and friction characteristics, respectively.

摘 要：为了确定翅片间距、管排数和入口空气相对湿度等参数对析湿工况下带亲水层波纹翅片空气侧特性的影响，对7个带亲水层的波纹翅片管换热器进行了试验研究，并分别以Colburn换热因子和Fanning摩擦因子来反映空气侧换热和压降特性。

The effects of space of finsnumber of tube rows and relative humidity of incoming air on airside performance of wavy fin with hydrophilic coating under dehumidifying conditions were experimentally explored for seven wavy fin-and-tube heat exchangers with hydrophilic coating. The Colburn factor and the Fanning friction were applied to describe airside heat transfer and friction characteristicsrespectively.

为了确定翅片间距、管排数和入口空气相对湿度等参数对析湿工况下带亲水层波纹翅片空气侧特性的影响，对7个带亲水层的波纹翅片管换热器进行了试验研究，并分别以Colburn换热因子和Fanning摩擦因子来反映空气侧换热和压降特性。

The dorsal fin is the vertical fin on the back of a fish and certain marine mammals.

背鳍就是在鱼或者某些海洋哺乳动物背上的垂直鳍。

Of,relating to,or being the marine teleost fishes of the order Pediculati,characterized by pectoral fin s extending from an armlike process and a dorsal fin ray that serves as a lure for prey.

柄鳍目鱼的属于、有关或是柄鳍目硬骨海鱼的，以从臂状突起延伸而成的腹鳍为特征且其背鳍骨可作捕杀猎物的诱饵之用

This new species of ancient scientists named "Puijila darwini", was considered to be fin-footed animals evolution of an important missing link, fin-footed animals refers to modern seals, sea lions and walrus and other species.

这种远古新物种被科学家命名为"Puijila darwini"，被认为是鳍足类动物进化过程中缺失的重要环节，鳍足类动物是指现代海豹、海狮和海象等物种。

Behind the dorsal fin , rainbows have an adipose fin that is commonly clipped from fish raised in a hatchery.

虹鳟和刚头常出现在溶氧充沛的湖泊或溪流中，这些地方夏季的水温通常不超过12°C ，在虹鳟背鳍的后面有一个脂肪鳍，人工孵育放流的鱼通常会把它剪掉。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。