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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。

Three types of base asphalt and six SBS were used to produce SBS modified asphalt. The interaction of SBS modified asphalt was discussed in different states between the base asphalt and SBS based on their compositions. Through the traditional tests, such as penetration, soften point and ductility, and US SHRP tests, the results indicated that influences to affect the temperature susceptibility, high and low temperature performance, aging characteristics are base asphalt, SBS types and their dosages. The functions of penetration to viscosity and complex shear modulus G~* to complex dynamic shear viscosity η~* were set up, and then theviscosity-temperature susceptibility of wide temperature span and the calculation method of low temperature viscosity were obtained."Process" evaluation criterions, high grading critical temperature T_ and low grading criticaltemperature T_ , were suggested according to the high and low temperatureperformances of SBS modified asphalt. Using the experience of Repeated Creep and Recovery Test for Binders, a new high-temperature evaluation index,modification rutting factor G~*~(-9) was obtained. The results after RTFO and PAV aging indicated that traditional tests didnt differentiate base asphalt and SBS modified asphalt, but dynamic mechanics temperature spectrum and G*-5 black chart clearly reflected the influence of aging to the SBS modified asphalt. With the IR and GPC tests, the reason of aging to the SBS modified asphalt were due to asphalt phase oxygenated and SBS phase depredated.

论文选择3种油源的基质沥青和6种SBS改性剂制备改性沥青,通过分析基质沥青和SBS改性剂的组成结构特点,得出了不同状态下SBS改性沥青的SBS与基质沥青的相互作用机理;通过针入度、软化点、延度等常规试验以及美国SHRP试验,分析了基质沥青、SBS改性剂类型与剂量对SBS改性沥青的温度敏感性、高低温特性及老化特性的影响;建立了针入度-粘度、复数模量G~*-复数粘度η~*的换算关系,得出了宽温度域的粘温指数VTS和较低温度下粘度的计算方法;通过高低温性能分析提出了&过程&评价参数高温等级温度T_和低温等级温度T_;借鉴重复恢复与蠕变试验研究成果,得到了SBS改性沥青高温评价指标改进型抗车辙因子G~*~(-9);RTFO和PAV老化后的性能试验结果表明,常规试验难以区分SBS改性沥青与基质沥青的差异,而动态力学温度谱、G~*-δ黑斑图可以反映老化作用对SBS改性沥青的影响,且通过IR试验和GPC试验得出SBS改性沥青老化是沥青相的氧化和SBS的降解共同引起的;通过不同温度下SBS改性沥青混合料的旋转压实SGC试验,根据粘度与剪变率的关系,提出用剪变率60(1/s)测试SBS改性沥青的粘温曲线,并按照0.17±0.02Pa.s和0.28±0.03Pa.s确定施工温度。

Their passionate outcries unnerve some impalas , and they scatter every which way .

它们多情的叫声吓坏了一些黑斑羚,让它们四处逃散。

Framed beneath a full moon, a cheetah prowls for impala and small game.

满月勾勒出一头印度豹月下觅食黑斑羚和小猎物的轮廓。

And this impala is reprieved.

这只黑斑羚只不过被延缓了行刑的日子

Chapter 3: This study examines the phylogeography and demographic history of black-spotted frog, Pelophylax nigromaculata, in temperate and subtropical China.

第三章:应用线粒体DNA的cyt-b基因序列探讨了中国大陆黑斑侧褶蛙的系统地理格局和种群结构,详细地揭示了该物种的建群历史。

"Black-spotted game fish of the salmon family, found in western North America."

北美西部具黑斑的鲑科游钓鱼类,学名为Salmo clarki。

It can infect all cloven-hoofed animals -- cattle, goat s, sheep, pigs, water buffalo, deer, bison, antelope, reindeer, llamas, chamois, alpacas, vicunas, giraffes, impala, elk, and camels.

它可以感染所有的有蹄类动物一牛、山羊、绵羊、猪、水牛、鹿、野牛、羚羊、驯鹿、驼羊、跳羚、羊驼、驼马、长颈鹿、黑斑羚、麋鹿和骆驼。

The most oil-vulnerable birds include bald eagles, crested auklets, murres, cormorants, ravens and several sea ducks, including eiders, mergansers, black and surf scoters, and harlequins.

最易受石油危害的鸟类包括秃头鹰、海鸠、鸬鹚、大乌鸦和一些海鸭类包括绒鸭、秋沙鸭、黑斑头海番鸭、海凫。

Antelopenumber in the tens of thousands:springboks,gemsboks,redhartebeests,blue wildebeests,elands and kuduS,even theelusive black-faced impala.

羚羊数以万计,有跳羚、好孥角大羚羊、红麇羚、蓝乍羚、人角斑羚和捻,甚至还有躲躲闪闪的黑脸黑斑羚。

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推荐网络例句

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。