Even smaller pectoral fins located near the back of the head are used for steering.
位于靠近头后面的更小的胸鳍用于控制方向。
She had to concentrate on flexing her pectoral muscle, or the triceps, to power the arm.
为了给手臂提供力量，她不得不用力伸缩她的胸肌或者三头肌。
Flying fish rely on a similar flow of accelerated air from their pectoral fins to provide lift to their smaller pelvic fins.
同样，飞鱼借助胸鳍所产生的加速气流，就可以对较小的腹鳍产生一定的提升作用。
She had to concentrate on flexing her pectoral muscle or the triceps to power the arm.
为了给手臂提供力量，她不得不用力伸缩她的胸肌或者三头肌。
But many fishes use oscillating pectoral fins for their maneuvers at low swimming speed.
在低速情况下，很多鱼类是利用其胸鳍实现良好的动力定位和机动。
Elongated mostly scaleless marine fishes with large pectoral fins and reduced pelvic fins.
多数细长的无鳞海水鱼，有大的胸鳍和退化的腹鳍。
Found in tropical coastal regions of Africa and Asia; able to move on land on strong pectoral fins.
产于非洲和亚洲的热带沿海水域；靠强壮的胸鳍可以在陆地上移动。
Purpose: to evaluate the efficacy of high-frequency ultrasound in detecting pectoral lymphatic nodes.
目的：评价高频超声在探测胸肌淋巴结中的应用价值。
He could see their wide, flattened, shovel-pointed heads now and their white tipped wide pectoral fins.
他这时看得见它们那又宽又扁的铲子形的头，和尖端呈白色的宽阔的胸鳍。
This exercise develops literally every tract of the pectoral muscle, but requires some proper warm up.
这个练习几乎锻炼所有各部分胸肌，但事先需要热身。
Conclusion: Gray - scale ultrasonography is applicable to help identifying normal and malignant pectoral nodes.
结论：灰阶超声在鉴别良、恶性胸肌淋巴结中具有一定的应用价值。
The ups and downs experiment proves that the pectoral fin on different angle influences the fish to move ups and downs.
在机器鱼的升潜试验中论证了胸鳍不同转角对升潜运动的影响。
Known to grow as long as about 5 feet (1.5 meters), moray species generally lack pectoral fins, unlike most other eel species.
我们已知这种欧洲海鳗最大能长到5英尺（1.5米）长，和绝大多数其他鳗鱼物种不同的是：它们通常没有胸鳍。
Objective to study clinical effects of modified radical mastectomy with preservation of major and minor pectoral muscles.
目的探讨保留胸大、小肌改良乳腺癌根治术的临床疗效。
All pectoral lymph nodes were located by ultrasound on body surface and studied as pathological specimens after operation.
运用高频超声探测胸肌淋巴结体表定位，并与术后病理标本中找到的胸肌淋巴结对照。
The eye sac, ear vesicle, heart, digestive tract, kidney, swim bladder, pectoral and tail fin were developed preferentially.
在整个发育过程中，眼、耳囊、心脏、消化道、肾脏、鳔、胸鳍和尾鳍等得到了优先发育。
Many fish larvae hatch without fully formed pectoral fins and all hatch without a swim bladder, so similar problems could occur for them.
很多小鱼孵化出来时，胸鳍还没有完全成形，而且所有的鱼孵化时都还没有形成鱼鳔。所以，它们可能会面临相似的不善于游泳的问题。
The pectoral fin motion model and the hydrodynamic performance's data which we obtained in this thesis are useful for our future design work.
本论文工作对未来相关仿生水下机器人的设计开发工作具有参考价值。
Once airborne, they use long pectoral fins and shorter pelvic fins on the sides of their bodies to create lift, much like the wings of an aircraft.
达到空中后，他们利用身侧的长胸鳍及短腹鳍产生升力，类似于机翼。
Due to the difficulty of dynamics modeling in fish surrounding by the fluid, little progress has been made in the design of the current pectoral locomotion.
由于流场环境中的鱼类动力学建模困难，目前胸鳍模式研究进展受到制约。
The regression tests in which separated bacteria were injected in the bottom of pectoral fin were all presented with symptoms similar to the natural incidence.
分离菌经胸鳍基注射回归感染试验均出现与自然发病相似的症状。
Three months into the plan, I realized that I needed to make some adjustments: I was over-working my pectoral muscles, so I decided to work them less frequently.
执行计划三个月之后，我意识到我需要做一些修改：我对我的胸肌做了过多的练习，所以我决定减少练习的次数。
They are soft and smooth-skinned, with a circular or nearly circular Body disk formed by the head and pectoral fins. They are harmless unless touched or stepped on.
体柔软，皮肤光滑，头与胸鳍形成圆或近于圆形的体盘。如不被触及则对人无害。
Flying fish There are about 50 different species of flying fish, although they don't fly so much as they leap from the water with a push of their powerful pectoral fins.
飞鱼世界上共有大约50种不同种类的飞鱼，但它们其实并不是真正飞行，而是猛地推挤胸鳍跃出水面。
Flying Fish There are about 50 different species of flying fish, although they don’t fly so much as they leap from the water with a push of their powerful pectoral fins.
世界上共有大约50种不同种类的飞鱼，但它们其实并不是真正飞行，而是猛地推挤胸鳍跃出水面。
Flying Fish There are about 50 different species of flying fish, although they don’t fly so much as they leap from the water with a push of their powerful pectoral fins.
世界上共有大约50种不同种类的飞鱼，但它们其实并不是真正飞行，而是猛地推挤胸鳍跃出水面。
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