aster ['æstə]

aster的基本解释

n.

紫苑属植物, 紫菀

aster所属的单词分类

Flower / 花 [127]

sego lily  ·  pasque flower  ·  lily-of-the-valley  ·  lady's slipper  ·  kangaroo paw  ·  cosmo  ·  baby's breath  ·  Wildflowers  ·  plumeria  ·  carrion flower

与aster相关的网络例句 [注：此内容来源于网络，仅供参考]

The absorption spectrum center wavelength of dolomite is near 232 μm is shorter than 235 μm of limestone,and thus RBD7 and RBD8 can be employed effectively to identify dolomite and limestone,respectively. Felsic rocks show AlOH and Fe3+ absorption characteristics in the VNIRSWIR region,while the maficultramafic rocks show Fe2+ and Fe,MgOH absorption features,hence the use of different valence state of iron and secondary minerals can distinguish them:ASTER band2/band1 represent Fe3+ distribution,ASTER band2/band1 represent the Fe2+ distribution,RBD6 can estimate the AlOH mineral abundance. Psammitic/pelitic schist containing phengite,chlorite,stilpnomelane,as well as the weathered surface covered by clay minerals,exist characteristic absorption spectrum in the 221 μm(band 6),and has a high reflectance in 165 μm(band 4),while the blueschist/greenschist show high reflectance in the 221 μm(band 6),and it exit low reflectance in 165 μm(band 4),and blueschist/greenschist appear low ASTER band4/band6 ratio.

白云岩的CO2-3吸收谱带中心波长位于232〖KG*3〗μm，与灰岩的CO2-3 吸收谱带中心波长位置235 μm相比，具有向短波长方向移动的特点，据此可以利用RBD7、RBD8分别有效的识别白云岩和灰岩；长英质岩石显示AlOH和Fe3+ VNIRSWIR吸收特征，而基性超基性岩石显示Fe2+和Fe、MgOH特征，利用不同的铁价态和次要矿物可以区分它们：ASTER band2/band1代表了含Fe3+矿物分布信息、ASTER band5/band4代表了含Fe2+矿物分布信息、RBD6可以估计AlOH矿物的丰度；砂质/泥质片岩含较多的多硅白云母、绿泥石、黑硬绿泥石以及风化后表面覆盖的其它粘土矿物，在221 μm（band 6）存在有特征的吸收谱带，并且在165 μm（band 4）具有较高的反射率，而蓝片/绿片岩在221 μm（band 6）反射率较高，不具有明显特征吸收谱带，同时其在165 μm（band 4）反射率较低，因此蓝片/绿片岩ASTER band4/band6 比值低。

"Aster any of various plants of the genus aster in the composite family, having radiate flower heads with white, pink , or violet rays and a usually yellow disk."

一种菊科紫菀属的植物，有带白、粉、或蓝紫色伞形放射状头状花序，花盘。

Based on Phylogenetic analysis of sequences from these 10 phytoplasmas using PAUP (phylogenetic analysis using parsimony) software, these phytoplasmas could be classified into five groups. These phytoplasmas groups and strains were: group 1, sweetpotato witches' broom, mainland China strain of sweetpotato witches' broom, peanut witches' broom and Ipomoea obscura witches' broom; group 2, loofah witches' broom; group 3, elm yellows; group 4, rice yellow dwarf and sugarcane white leaf disease; group 5, New Jersey strain of aster yellows and western strain of aster yellows.

从spacer序列堆衍的亲缘演化树显示这10种植物菌质体可分为5群：第一群，甘薯簇叶病、甘薯簇叶病、花生簇叶病及细花牵牛簇叶病等菌质体；第二群，丝瓜簇叶病菌质体；第三群，榆树黄化病菌质体；第四群，水稻黄萎病及甘蔗白叶病菌质体；第五群，翠菊黄化病菌质体。

与aster相关的网络解释 [注：此内容来源于网络，仅供参考]

aster：星体

这种海胆的卵很小,卵黄极胞的"运动器",星体(aster)和纺锤丝比对细胞核和染色体更加注意. 另外一肉眼不可见的、各自不同的微芽(gemmules)体现的假说. 这些微芽通过分裂而增核无关). 每股长索则由无数类群的分子团(micelles)构成,

aster：紫菀

"紫菀"防空导弹 "紫菀"(Aster)是法、意联合研制的先进地(舰)空导弹. 这种"直接碰撞杀伤"导弹既可用于舰艇防空,又可用于陆基防空. 全能性是"紫菀"的最大特点. 它可在10米~25公里拦截超声速反舰导弹,在15米~45公里防御高速飞行的攻击机,

aster：紫苑

意大利"紫苑"(Aster)主要对空导弹系统(PAAMS)海军防空武器的最终系统限定性火力试验已完成,并于5月14日在法国CELM中心进行了射程试验. 试验结果达到了所有规定的目标要求,由此试验被证实取得了成功.

aster：紫菀屬

将内陆盐生植物划分为6个大群,即内陆欧洲群,有隐花草属(Crypsis)、紫菀属(Aster)毒荇菜属(Lepidium);内陆亚洲群,有盐爪属(Kalidium)、盐穗木属(Halostachys)、盐节木属(Halocnemum)、碱蓬属(Sueada);非洲群,

Threevein Aster：红管药

Thorny Elaeagnus Leaf 胡颓子叶 | Threevein Aster 红管药 | Thunberg Fritillary Bulb 浙贝母