纺锤形的

Hsüopsida is parallel to the above three plant categories in Early Devonian and differs from them in that: the trimerophytes or Euphyllophytina have long fusiform sporangia terminating in trusses and P-type tracheids; the zosterophytes or Lycophytina are characterized by the exarch xylem; the rhyniophytes bear simple isotomous branches and S-type tracheids.

徐氏蕨类群与上述早泥盆世的三大类群并行，它不同于三枝蕨类或者是真叶植物的长纺锤形、成簇顶生的孢子囊和P-型管胞；不同于工蕨类或石松植物的外始式木质部；不同于莱尼蕨类植物简单的等二叉分枝和S-型管胞。

This high power microscopic appearance of cardiac myxoma shows minimal cellularity. Only scattered spindle cells with scant pink cytoplasm are present in a loose myxoid stroma.

高倍镜可见心房粘液瘤极小的细胞结构，仅有散在的纺锤形细胞，在疏松的粘液样基质中有少量淡红的胞浆存在。

Seeds linear to fusiform, winged at both ends; seed coat coarsely reticulate.

种子线形的到纺锤形，具翅的在两末端；粗的种皮网状。

Inflorescence terminal on pseudostems or on separate, short, sheath-covered shoots arising from rhizomes, cylindric or fusiform, sometimes globose, lax to dense, few to many flowered, sometimes with bracteolate cincinni in bract axils and then a thyrse, sometimes a raceme or spike; bracts and bracteoles present, often conspicuous, colored.

在单独，短，鞘盖住的笋上的或的在假茎上顶生的花序起因于根状茎，有时球状，圆筒状或纺锤形，疏松对紧密，少数到多花的，苞片和小苞片有，通常明显，有色。

Bone marrow containing hematopoietic stem cells has already been known , theses another group stem cells exists in bone marrow named mesenchymal stem cells. MSCs retain the potentiality of differentiating into osteoblast, chondroblast, adipoblast, tendonblast, myoblast, cardiomyoblast, neuron, etc , which displays a bright prosperity of its use in tissue enigeering, wound healing , cell transplatation and gene therapy. MSCs can be obtained and expanded easily compared to ESC without any problems of morality , law and ethic , immunology.

最早在130年前，德国病理学家Cohnheim在研究创口愈合时就推测在创口愈合过程中出现的部分细胞可能来自骨髓。20世纪70年代，Friendenstein发现一小部分骨髓中贴壁最牢固的细胞经数此传代后形成独特的纺锤形外观，具有形成成骨细胞或软骨细胞的能力。80年代以来，许多研究小组进一步证实了Friendenstein分离到的这些细胞是多能的，在体外特定诱导条件下，可以分化为成骨细胞、软骨细胞、脂肪细胞、成肌细胞、神经元等，被称为骨髓间充质干细胞(Bone MarrowMesenchymal Stem Cells，MSCs)。

Single crystal α-Fe2O3 submicron particles and β-FeOOH nanospindles or nanorods can be controllably fabricated by simply changing the experimental parameters.

研究表明，通过实验参数的简单调控，实现了单晶α-氧化铁亚微米粒子与β-FeOOH的纺锤形纳米结构和纳米棒的控制制备。

Thunbergii trees were established, and the sun survivorship curves were drawn with field data. The results showed that in the three plots, the height and basal diameter growth of regenerated young P. thunbergii trees had exponential, linear, and quadratic functional relations with age and the age structure was of spindle, discrete, and pyramid types, respectively. Most of the regenerated young trees were distrbuted at 0.3-1.2 m from their nearest standing trees, and the individuals of the young trees decreased near to or far from the nearest standing trees. Inplots Ⅰ and Ⅲ, the expected average life of regenerated young P. thunbergii trees had a decreasing trend with their increasing age, and the survival number of the population also decreased with increasing population age. The survivorship craves of regenerated young P. thunbergii trees in the two plots approximated to the type of Deevey Ⅱ, indicating that the young P. thunbergii populations in the plots were at stable development stage. The population structure of regenerated young P. thunbergii trees in plot Ⅱ was lesser integral, suggesting that the population was of declining types being related to human disturbance, slope and other environmental factors.

结果表明：(1) 3个样地中幼龄植株高生长、基径生长与年龄均分别呈指数函数、直线和二次函数关系；(2) 3个样地黑松幼龄植株年龄结构存在着明显差异，分别表现为纺锤形、残缺型和金字塔型；(3)幼龄植株主要集中分布在距最近立木0.3~1.2m，离立木越近或越远幼龄植株均逐渐减少；(4)对样地Ⅰ和样地Ⅲ黑松幼龄植株生命表和存活曲线的分析表明，随年龄的增加，黑松幼龄植株生命期望值基本上呈递减趋势，黑松幼龄植株种群存活数也随着年龄的增加而降低；样地Ⅰ和样地Ⅲ黑松幼龄植株种群存活曲线近似于Deevey Ⅱ型，表明2个样地黑松幼龄植株种群处于稳定发展阶段；(5)样地Ⅱ幼龄植株种群结构很不完整，表明该种群属于衰退型，与人为干扰及坡度等有关。

The shape of cuttings is related with the drilling parameters. The cuttings often appear in irregular flakes during air hammer drilling, and in spindle shape during cone bit drilling.

岩屑的形状与钻井参数有关，空气锤破碎岩石的岩屑形状呈不规则片状，牙轮钻头破碎岩石的岩屑形状呈纺锤形。

To confirm the cells' bone marrow origin, chimeric mice were createdby the rescue of irradiated C57BL/6 mice with marrow fromROSA26, a congenic line expressing lacZ. I/RC resulted in a large population of spindle-shaped fibroblasts containing lacZ.

为了证明这些细胞的骨髓源性，我们利用ROSA26对C57BL/6系小鼠进行照射制作了嵌合子小鼠模型（一种能表达lacZ的同类系），从中发现I/RC产生了大量含有lacZ的纺锤形纤维母细胞。

To confirm the cells' bone marrow origin, chimeric mice were createdby the rescue of irradiated C57BL/6 mice with marrow fromROSA26, a congenic line expressing lacZ.

为了证明这些细胞的骨髓源性，我们利用ROSA26对C57BL/6系小鼠进行照射制作了嵌合子小鼠模型（一种能表达lacZ的同类系），从中发现I/RC产生了大量含有lacZ的纺锤形纤维母细胞。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失