羽状蛋,Pinnatoolithidae
1)Pinnatoolithidae羽状蛋
1.The findings of the Pinnatoolithidae reveal the evolution from the dinosaur egg to the bird egg,which is characterized by the variation of the prismatic layer of egg shell from the layer structure to the pinnate structure.另外通过对羽状蛋化石的研究,揭示出恐龙蛋到鸟蛋的进化,是由于蛋壳棱柱层产生了变异,出现了从‘层状结构’到‘羽状结构’的转变;与现代鸟禽类对比后确认,恐龙蛋的棱柱层相当于鸟禽类的鳞片层(带);具有羽状结构的蛋化石是恐龙蛋演化到鸟蛋的一种中间类型。
2)plume[英][plu:m][美][plum]羽毛;羽状
3)pinnate[英]['pineit][美]['p?net]羽状
英文短句/例句

1.bipinnatifid with segments pinnatifid.二回羽状分裂的羽状半裂片。
2.A feather - shaped flaw, as in a precious stone.羽状瑕疵宝石中的羽状裂痕的微瑕
3.A leaflet or primary division of a pinnately compound leaf.(复叶的)羽片羽状复叶的小叶子或羽片部分
4.palm having pinnate or featherlike leaves.有羽状的或像羽毛一样的叶片的棕。
5.of a pinnate leaflet; having only one pair of leaflets.只有一对叶子的羽状叶。
6.pinnatifid with the segments also pinnatifid.有羽状分裂的细裂片组成的羽状分裂结构。
7.a reedlike grass of the genus Erianthus having large plumes.蔗茅属芦苇状草,有巨大羽状物。
8.of a leaf shape; having doubly pinnate leaflets (as ferns).指叶子形状;有双重羽状叶(如厥类植物)。
9.Divided pinnately nearly to the midrib. Used of certain leaves.羽状全裂的接近中脉的羽状分裂的。用来指某种叶子
10.Pinnately compound with a single terminal leaflet, as in the leaves of the rose plant.奇数羽状叶的与顶端羽状单叶接合的,如蔷薇科植物的叶
11.small genus of South American feather palms.产于南美的一个棕榈植物小属,叶羽状
12.Central and South American feather palms.中美和南美产的一个羽状叶棕榈属。
13.Having feathers or featherlike growths; feathered.有羽毛的,长羽毛的有羽毛的或羽毛状生长物的;有羽毛的
14.A hairlike feather having few or no barbs, usually located between contour feathers.纤羽具有少量或没有羽支的发状羽毛,通常处于外侧羽毛之间
15.The hollow stemlike main shaft of a feather.翎管羽毛的中空的茎状羽干
16.Having coloration or a crest suggesting a hood.冠状的有象羽冠形的色彩或羽毛饰的
17.corals forming featherlike colonies.形成羽毛状群体的珊瑚。
18.brown velvety-plumaged songbirds of the northern hemisphere having crested heads and red waxy wing tips.北半球褐色柔软羽毛的鸣鸟,头部有羽冠,翅羽有蜡状红色尖端。
相关短句/例句

plume[英][plu:m][美][plum]羽毛;羽状
3)pinnate[英]['pineit][美]['p?net]羽状
4)A polyp with a pinnate form;pinnate leaves.羽状珊瑚;羽状叶
5)feather protein羽毛蛋白
1.Preparation and water absorbency performance of modified feather protein grafted acrylic acid-acrylamide superabsorbents;羽毛蛋白接枝聚丙烯酸-丙烯酰胺树脂的合成与吸水性能
2.Study on synthesis process of modified feather protein grafted acrylic acid superabsorbents;羽毛蛋白接枝丙烯酸高吸水性树脂的合成工艺研究
3.Preparation and water absorbency performance of the modified feather protein grafted acrylic acid superabsorbents;改性羽毛蛋白接枝丙烯酸高吸水性树脂的制备与吸水性能
6)feathered en echelon羽状雁列
延伸阅读

羽毛羽毛feather鸟类表皮细胞衍生的角质化产物。被覆在体表,质轻而韧,略有弹性,具防水性,有护体、保温、飞翔等功能。成鸟的羽毛通常分为3种:①正羽。包括被覆体外的大型羽片(廓羽)以及在翅和尾部着生的飞羽和尾羽。飞羽和尾羽的数目是恒定的。羽轴端为羽根,深植于皮肤中。羽轴两侧斜生许多并行的羽支,各羽支两侧更分出排列整齐的羽小支。羽支远侧的1列羽小支具有许多羽纤支,其尖端有细钩,与羽支近侧的羽小支连接,组成扁平而有弹性的羽片,以扇动空气和保护身体。②绒羽,又名。密生在正羽下面,羽支细长成丝状,着生于羽根的顶端。羽小支短,不具羽纤支或细钩,因此羽支蓬松成绒形。水禽绒羽比较发达,鸭绒就是这种羽毛。鹭类、鹦鹉类、鹰类往往具有一种特殊绒羽,稍一触动即碎成粉状,所以称粉,它可以除去体外寄生虫和污物。③纤羽。羽轴细长,杂在正羽和绒羽之中。羽支和羽小支数目很少或者没有,是一种退化了的正羽。鸟羽鸟的羽毛轻而耐磨,是热的不良导体。飞羽与尾羽对飞翔有很大意义。鸟类对羽毛常加洗浴,抖掉羽毛间的尘埃,并用嘴梳整,啄尾脂腺分泌的油脂涂抹全身羽毛。