查询词典 dorsal fin

The measurements used are fork length, head length, upper jaw length, snout length, length of dorsal fin base and anal fin base and the distances from the tip of snout to insertion of dorsal fin, to pectoral fin, to ventral fin and to hard margin of preopercle.

此所用於分析之外部非体节形质计有：尾叉长、头长、上颚长、吻长、眼径、背鳍基底长、臀鳍基底长以及吻端到前鳃盖骨后绿、背鳍起点、腹鳍起点、臀鳍起点等11个形质。

Moreover, as the heat flux approach to CHF, numerous vapor mushrooms periodically extruded from the perimeter of fin array are observed. This mechanism will cause the dry-out situation in the central part of fin array. The closer fin spacing and longer fin length can provide larger heat transfer. However, the results also demonstrate that early decay on overall heat transfer coefficient as the fin spacing is closer or fin length is longer.

此外，间距0.5mm且高度4mm的鳍片阵列，其热传系数并不随热通量的升高而增加，在中高热通量区，其热传系数保持在一固定值，而其它低深宽比的鳍片阵列，热传系数则是随著热通量升高而增加，到了高热通量区，热传系数会有一最大值，之后会随热通量增加而递减。

The Vietnamese material is dearly distinguished from the examined holotype (AMNH 8365)and paratypes (AMNH 10316, 10307) of Schistura fasciolata by the pelvic-fin origin situated below unbranched or first branched dorsal-fin ray (vs. pelvic-fin origin dearly in front of dorsal-fin origin in S.fasciolata).

越南采集的标本和横纹南鳅的模式标本（AMNH 8365）和副模式标本（AMNH 10316， 10307）有明显的差别，腹鳍起点位于不分支鳍条或第一分背鳍枝鳍的下方（vs S.fasciolata的腹鳍起点明显在背鳍起点的前方）。

The deformation always appears near the points of the origin of pectoral fin or the origin of dorsal fin to the posterior margin of caudal fin, and is mostly accompanied by flaccidity of caudal fin end.

畸形弯曲位置主要发生在近胸鳍起点处以及背鳍起点至尾鳍末端之间，多伴有尾鳍末端下垂。

Dorsal fin, tail fin and fat fins slightly yellow, pectoral fin, and ventral fin Tunqi gray.

背鳍、脂鳍和尾鳍稍带浅黄色，胸鳍、腹鳍和臀鳍灰白色。

Colors below the posterior dorsal rags fin are identical and no black spots on them. The distance from anterior to posterior dorsal fin base (the distance between the two dorsal fins) was relatively short. The base of the two ventral fins united and concaved narrowly.

modestus的主要形态区别为：第1背鳍大而高，第1鳍棘呈丝状延长，各鳍棘尖明显伸出鳍膜；第2背鳍各鳍棘中部以下颜色均一，无黑斑；第1背鳍和第2背鳍基部之间间距较小；左右腹鳍基部愈合处凹陷较浅。

Quantitative analysis revealed that the intensity of SERT immunoreactivity was significantly lower in median raphe nucleus, caudal part of dorsal raphe nucleus, interfascicular part of dorsal raphe nucleus, ventral part of dorsal raphe nucleus and dorsal part of dorsal raphe nucleus of alcoholic group compared with that in corresponding nuclei of control group.

在酗酒人脑标本，正常分布于脑干头侧中缝核群的SERT免疫反应标记信号减弱；中缝正中核、中缝背核尾侧部、中缝背核束间部、中缝背核腹侧部、中缝背核背侧部的SERT免疫反应含量强度与健康组相应区域比较显著降低。

Furthermore the performances of heat transfers including corrugate plate, tube and fin-tube were compared under the same conditions. The results show that when the air frontal velocity is between 2.45 and 4.1m/s, the overall heat-transfer coefficient of plate heat exchanger ranges from 100 to 160 W/m^2/ equal to one sixth of that of fin- tube cooler based on tube outside area, which is about 70% higher than that of tube cooler. The volumetric heat transfer capacity of plate cooler is 1.5 times as that of fin-tube cooler and 15 times as that of tube cooler. The heat transfer capacity of per unit power of plate cooler is 5.5 times as that of tube cooler and similar results for fin-tube cooler.

在相同工况下，比较了波纹板式、光管式和翅片管式空冷器的性能指标，结果表明：迎面风速在2.45~4.1m/s之间，波纹板式空冷器传热系数达到100~160W/平方公尺/℃；约比光管式提高70%，但只有以管束外表面为基准的翅片管式传热系数的六分之一；板式空冷器单位体积换热量约是翅片管式空冷器的1.5倍，是光管式的15倍；板式空冷器单位功耗换热量约是光管式空冷器的5.5倍，而翅片管式空冷器与光管式空冷器则相差不大。

This paper takes the small fish of Carangiform as the mimetic object. Through the bionics study to the principle of Carangiform"s propulsion, the robofish"s main body mechanism that has two degrees of freedom tail fin and single degree of freedom pectoral fin has designed. At the same time, the parameterized mathematical model of double-hinged propulsion system has established. The kinematics analysis, dynamics analysis to the propulsion process and preliminary hydrodynamics analysis to the tail fin and the pectoral fin have been completed. The dynamic equations to the propulsion system have been established.

本文以鲹科模式鱼类为仿生对象，通过对鲹科模式鱼类游动机理的仿生学研究，设计了两自由度的尾鳍推进机构及单自由度的胸鳍机构的机器鱼机械本体结构，建立了参数化的两关节尾鳍推进模式的数学模型，并对推进过程进行了运动学、动力学分析，建立了推进系统动力学方程，对尾鳍和胸鳍推进的水动力进行了初步分析。

This paper describes a quasi-linearization method for computing the anti-rolling behaviour of ships for the condition of the fin s saturation. In the evaluation of the lift of the fin s the interaction effects between the fin s and bilge keels, and between the fin$$...

本文给出减摇鳍装置工作在鳍角超过饱和点情况下的横摇性能计算方法，并分析了两艘装减摇鳍的船在波浪中的试验结果同理论计算结果的对比，通过理论与实际的比较说明这一方法在选择减摇鳍尺寸以及本装置在船上的布置将是有意义的，并可用来预报装减摇鳍的船舶在不规则海浪中的横摇运动性能。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。