具双种子的

Puna Chicory, leymus multicaulis and Psathyrostachysjuncea.For the materials used in this article were some old seeds which had been stored for 3-7 years, we found a lot of abnormal mitotic and meiotic cells, such as chromosome bridge. chromosome laggard, micronucleus, multipolar division and so on. Moreover, we also found the wheat"s multi-anther, double germinate-hole"s microspore and collected the photos of every period of meiosis. mitosis.

因为用于细胞学检测的小麦材料是搁置多年的陈旧种子，所以在检测染色体数目时，发现大量异常分裂现象，包括染色体桥、染色体落后、微核、多极分裂等；实验过程中还发现小麦多花药现象和花粉粒具双萌发孔的现象；同时在显微观察同时还注意搜集了细胞有丝分裂、减数分裂各个时期的分裂相图片。

Fruit indehiscent silicle, didymous, schizocarpic, reniform, cordate, or obcordate, angustiseptate, sessile, breaking into 2, 1-seeded, closed halves; valves woody, obscurely to prominently veined, glabrous or hairy, keeled or rounded, reticulate, rugose, verrucose, tuberculate, or rarely smooth; replum rounded; septum reduced to a rim or absent; style obsolete or to 1 mm; stigma capitate, entire.

果不裂短角果，成双，schizocarpic，肾形，心形，倒心形，果实狭隔的或，无梗，闯进2，1种子，裂爿木质，不明显兑一显著脉，无毛或有毛，龙骨状或圆形，，具皱纹，瘤状，具瘤，平滑的或很少；假隔膜绕行；隔膜退化至一凸缘或无；花柱废退的或到1毫米；柱头头状，全缘。

Seeds biseriate, broadly winged, orbicular, ovate, or elliptic; seed coat smooth, not mucilaginous when wetted; cotyledons accumbent.

双列的种子，具宽翅，圆形，卵形，或椭圆形；平滑，不黏的种皮被弄湿；子叶依着。

Seeds uniseriate or biseriate, wingless, oblong, plump or flattened; seed coat foveolate or papillate, not mucilaginous when wetted; cotyledons incumbent, oblique, or accumbent.

双列的种子单列或，无翅，长圆形，扁平的肥厚的或；种皮蜂窝状或具乳突，不黏什么时候弄湿；子叶现任，偏斜，或者依着。

Seeds uniseriate or biseriate, broadly winged, proximally margined, or wingless, oblong or orbicular, flattened; seed coat smooth, not mucilaginous when wetted; cotyledons accumbent.

双列的种子单列或，具宽翅，下部边缘，或无翅，长圆形或圆形，扁平；平滑，不黏的种皮被弄湿；子叶依着。

Seeds uniseriate or biseriate, wingless, broadly ovate or suborbicular, flattened; seed coat reticulate, rugose, or papillate, not mucilaginous when wetted; cotyledons accumbent.

双列的种子单列或，无翅，宽卵形或近圆形，扁平；网状的种皮，具皱纹，不，或具乳突黏被弄湿；子叶依着。

Seeds uniseriate or biseriate, wingless, oblong, ovate, reniform, orbicular, ovoid, lenticular, elliptic, ellipsoid, or globose, slightly flattened; seed coat minutely reticulate or papillate, not mucilaginous when wetted; cotyledons incumbent or rarely accumbent.

双列的种子单列或，无翅，长圆形，卵形，，圆形，卵球形，透镜状，椭圆形，椭圆形，或球状，稍扁平；种皮微小的网状或具乳突，不黏什么时候弄湿；子叶现任的或很少依着。

Fruit indehiscent, schizocarpic, didymous, angustiseptate silicles, sessile or shortly stipitate; valves oblong, obovate, or orbicular, 1-seeded, leathery, smooth, broadly winged, keeled, glabrous; replum rounded; septum complete, thickened, opaque, veinless; style obsolete, rarely to 0.5 mm; stigma capitate, entire.

不裂的果，schizocarpic，成双，果实狭隔短角果，无梗或具短柄；裂爿长圆形，倒卵形，或圆形，1种子，革质，平滑，具宽翅，龙骨状，无毛；假隔膜绕行；隔膜完全，加厚，不透明，无脉；花柱淘汰，很少对0.5毫米；柱头头状，全缘。

The efforts that have been made to explain optical phenomena by means of the hypothesis of a medium having the same physical character as an elastic solid body led, in the first instance, to the understanding of a concrete example of a medium which can transmit transverse vibrations ,and at a later stage to the definite conclusion that there is no luminiferous medium having the physical character assumed in the hypothesis.

为了解释光学现象，人们曾试图假定一种具与弹性固体相同的物理性质的介质。这种子尝试的结果，最初曾使人们了解到一种能传输横向振动的具上述假定所以认为的那种物理性质的发光介质。大量使用复合词与缩略词科技文章的特点之一，复合词从过去的双词组合发展到多词组合；缩略词趋向于任意构词，例如某一篇论文的作者可以就仅在该文中使用的术语组成缩略词，这给翻译工作带来一定的困难。例如

The efforts that have been made to explain optical phenomena by means of the hypothesis of a medium having the same physical character as an elastic solid body led, in the first instance, to the understanding of a concrete example of a medium which can transmit transverse vibrations ,and at a later stage to the definite conclusion that there is no luminiferous medium having the physical character assumed in the hypothesis.

为了解释光学现象，人们曾试图假定一种具与弹性固体相同的物理性质的介质。这种子尝试的结果，最初曾使人们了解到一种能传输横向振动的具上述假定所以认为的那种物理性质的发光介质。大量使用复合词与缩略词是科技文章的特点之一，复合词从过去的双词组合发展到多词组合；缩略词趋向于任意构词，例如某一篇论文的作者可以就仅在该文中使用的术语组成缩略词，这给翻译工作带来一定的困难。例如

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。