换句话说，鼹钝口螈的变态是一种返祖现象。
In other words, metamorphosis in mole salamanders is an atavism.
研究了尖头、钝头弹在侵彻机理上的差异。
The differences in the penetration mechanism between cuspidal and blunt projectiles are studied.
干法射线照相术显示头顶上的伤口是由一个相对较钝的物体造成的。
Xeroradiography revealed the scar on top of the head was caused by a relatively blunt object.
这把刀的刀锋太钝，不能切萝卜。
Dull The blade of this knife is so dull that it will not cut a radish.
刀钝石上磨，人蠢没奈何。
A blunt knife may be sharpened on a stone, but if a man is stupid there is no help for his stupidity.
这刀刃已变钝了。
分梳罗拉针布上的针齿损坏或变钝。
剑鞘甘愿粗钝，它保护着利剑的锋刃。
The scabbard is content to be dull when it protects the Keenness of the sword .
切削刃钝圆一般能使切屑卷曲半径增大。
The cutting edge roundness can make chip curling radii larger.
在别处，他们为钝鼻蜥蜴和更格卢鼠打官司。
Elsewhere they have gone to court for the blunt-nosed leopard lizard and the giant kangaroo rat.
由于模具和冲模会变钝，需要不断更新，这也造成了成本上升。
The need to keep replacing the stamps and dies used by the press, as they become blunt, also adds to the expense.
在燃烧器出口钝体下游轴向速度为负，形成回流区。
At the exit of the bluff-body, recirculation area is formed because of the negative downstream axial velocity.
他生性敏于发现别人的缺点，却钝于同情别人的苦难。
He is by nature quick to see the faults of others, and slow to sympathize the sufferings of others.
如果你的斧头钝了，会严重影响砍伐树木的速度和效率。
If your axe is blunt, it will seriously affect the speed and efficiency of cutting trees.
本文讨论了斜爆炸波与超音速钝锥激波层的相互作用问题。
The interaction between an oblique blast wave and supersonic blunt cone was discussed.
病人多呈贫血貌，体检有心音低钝、心律失常等异常体征；
The patients had mostly anemic appearance and there were cardiac sound low and arrhythmia.
马吕斯听见他把一件重东西放在桌上，也许是他买的那把钝口凿。
Marius heard him lay something heavy on the table, probably the chisel which he had purchased.
钝工具比锋利工具更为危险，因为使用钝刀片切割需用更大的力气。
Dull tools can be more hazardous than sharp ones, since it takes more force to cut with a dull blade.
它们的结果表明：钝切口比尖锐切口的动态应力强度因子增长率更快。
Their results showed a more rapid rate of increase in the dynamic sif for blunt than for sharp notches.
叶片基部宽楔形到圆形，边缘钝锯齿；核果和内果皮椭圆形的到长圆形。
Leaf blade base broadly cuneate to rounded, margin obtusely serrate; drupe and endocarp ellipsoid to oblong.
学习专业的磨刀技巧很重要，因为错误的磨刀方式只能够让刀子越磨越钝。
It's important to learn how to do it from an expert because the wrong technique can actually dull your hunting blade.
鞘安于钝，以护剑利。 （刀鞘保护刀的锋利，它自己则满足于它的迟钝。
The scabbard is content to be dull when it protects the keenness of the sword.
我在学编程时，常把程序比作卷笔刀，而把参数比作钝铅笔，经过处理我们就得到尖铅笔了。
When learning computer programming, I found it helpful to look at a function like a pencil sharpener. A parameter was a dull pencil, inside processes sharpened and returned a sharp pencil.
用回流加热链着火分析法，分析比较了钝体燃烧器和开缝钝体燃烧器不同的稳焰机理。
By the method of circle heating chain analysis, the different mechanism of flame stability between bluffbody burner and slitting bluffbody burner were compared.
研究了双钝体旋涡脱离的流体动力学特性以及利用双钝体增强流体振动的最佳组合结构。
The dynamics characteristics of dual bluff body vortex and the best structure of dual bluff body vortex improving fluid oscillation are studied.
你可以认为他是因为赋闲19个月而钝了刀锋，也可以认为太多的恶战蚀去了他的技能。
Call it rust from a 19-month layoff or call it an erosion of skills after so many tough battles in the ring.
但是，它们的口器可能更令人望而生畏——毫不夸张地说，海胆的牙齿可以把岩石咬碎，却永远不会变钝。
But their mouths may be even more daunting-urchin teeth can literally chew through stone without getting dull.
但是，它们的口器可能更令人望而生畏——毫不夸张地说，海胆的牙齿可以把岩石咬碎，却永远不会变钝。
But their mouths may be even more daunting-urchin teeth can literally chew through stone without getting dull.
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