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The ultrastructure characters of pollen grain in Brassica napus are:1There are vacuoles in cytoplasm but no starch grain in uniceelluar pollengrain.2The veget- ative nucleus of bicellular pollen grain is generally spheroidal;while the generative cell is spinde-shaped,with a big nucleus,thin layer of cytoplasmand few cell orgens,no cell wall.3In three-celled pollen grain the sperm cell is separated from the cytoplasm of vegetative cell by two layers of plasmic membrances.

Brassica napus的花粉粒,在不同发育时期超微结构的特征如下:1单胞花粉粒有一个球形的细胞核和明显的核仁,细胞质内出现液泡,缺少典型的淀粉粒。2双胞花粉粒的营养核多为球形。生殖细胞纺锤形,无细胞壁,细胞核比例大,细胞质呈薄层,细胞器少。3三胞花粉粒有一个裂片状的营养核和两个纺锤形的精细胞,精细胞无壁,以两层质膜与营养细胞的细胞质相隔。

Leaves opposite or rarely alternate, subequal in size; stipules lanceolate, 7-10 mm; petiole 1.5-6(-10) cm, densely pubescent; leaf blade dark green or black when dry, oblate to 5-angled or oblate to orbicular-ovate, often ovate in upper stems, 8-12(-18)× 7-14(-22) cm, papery, secondary veins 2 pairs along midvein, abaxial surface densely pubescent along veins and veinlets, adaxial surface roughish, densely strigose, base truncate, subcordate, or broadly cuneate, margin coarsely 8-12-dentate, teeth gradually larger distally, often biserrate apically, apex 3-cusped or lobed, tip serrulate. Glomerules on axillary spikelike flowering branches, male branches often branched, 8-17 cm; female spikes distal, unbranched or branched, 5.5-24 cm.

叶对生或很少互生,大小近等;托叶披针形,7-10毫米;叶柄1.5-6(-10)厘米,密被短柔毛;叶片深绿色或黑色的干燥时,扁球形到具5个角或扁球形的到圆形卵形的,通常在上面茎内卵形的, 8-12(-18)* 7-14(-22)厘米,纸质,次脉2 对沿中脉,背面密被短柔毛的沿脉和细脉,正面微糙,密被糙伏毛,基部截形,近心形,或宽楔形,团伞花序在腋生的穗状的花枝,雄性分枝通常分枝,8-17厘米的;雌性穗状花序上部,不分枝或分枝,-24 厘米。

Seeds obovoid or obovoid-elliptic, base rostrate, abaxially 1-furrowed with a rounded or suborbicular or elliptic chalazal knot, adaxially 2-furrowed; endosperm M-shaped in cross-section.

种子倒卵球形或倒卵球形的椭圆形,基部具喙,背面的1棱槽具一圆形或近圆形的或椭圆形种脐,正面2棱槽;横截面的胚乳M形。

The nuclear image messages were digitalized and stored in the computer to form a database available for further study in this field. Results (1) In the EL, the majority were the big global nuclei of the mature ependymal cells. A few bigger nuclei were located deep to the ependymal cells, and some small irregular-shape, nuclei were scattered and wedged between ependymal cells.

结果 ①在EL,主要是体积较大且呈球形的成熟室管膜细胞核;另有体积更大的球形细胞核贴近室管膜细胞深方;此外,还有体积较小而形状不规则的细胞核散在镶嵌于室管膜细胞之间。

In noninfectious uveitis (28.3%), stippled, globular, and multiple globular types of KPs were found.

非感染性葡萄膜炎(28.3%)的角膜后沉着物的特征是斑点状的、球形的以及多球形的

Melilite-rich Inclusions The different melilite-rich inclusion in Ningqiang displayed the differences in the petrologic features such as its shape, size and texture and so on. For example: their shape can be irregular, lump, subglobe, and globe.

不同的富黄长石包体显示出在形状、大小和结构等特征的差异,例如:它们的形状可以为不规则的,团块形的、准球形和球形的

Disk scales 1-3, unequal, linear-oblong to broadly ovate, apex 3-lobed or -dentate. Ovary narrowly obovoid, ca. 4 mm, stipitate, apex puberulous; style very short; stigma depressed-globose.

花盘鳞片1-3,不等长,线状长圆形到宽卵形,先端3裂的或具牙齿狭倒卵球形的子房,长约4毫米,具柄,被微柔毛的先端;花柱非常短;柱头扁球形。

A narrow opening is left in the neck of the flask, through which the perfect insect forces its way, so that a forsaken cocoon is as entire as one still tenanted, no rupture of the interlacing fibers having taken place.

一头是一条细管,一头是一个球形的囊,很像试验室中的细颈瓶。当蛾出茧的时侯,它必须从球形囊那里爬过那条极细的管儿,然后才能脱身,飞翔在空中。

Fruit cordate-ovoid or oblong-ovoid, slightly laterally compressed, constricted at the commissure, glabrous or variously hairy; ribs 5, filiform, sometimes obscured by the indumentum; vittae 1–3(–4) in each furrow, 2–4(–8) on commissure.

果心形卵球形或长圆状卵球形的,稍侧面压扁,在合生面缢缩,无毛的或各种地有毛的;棱5,丝状,有时不明显毛被;油管1-3(-4)在每棱槽,2-4(-8)在合生面上。

Finally, the influence of permanent tide is recalculated using the same precise development of TGP. This work can be taken as a theoretical reference for the research of highprecision space geodesy and astrogeodynamics. tide-generating potential ; station displacements ; spectrum method ; Love/Shida number

最初的Love数和Shida数是由静态球形地球的潮汐模拟理论推求的,由于地球是旋转椭球形的天体,地球形变对引潮力位的响应存在着不同调和函数的微小混合,这样Love数和Shida数就与测站纬度和TGP的调和级次有关,纬度特性可通过引入一组常数来表示,最初的结果由Wahr

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