松科
- 与 松科 相关的网络例句 [注:此内容来源于网络,仅供参考]
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In this article the research of pinaceous fossil cones from the Creaceous to the Oligocene in the Tertiary is reviewed and summarized systematically.
本文主要对早白垩世到老第三纪渐新世这段时间的松科化石球果的研究作了系统回顾和总结。
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Microspore Ye as the feather, small sporophyll sac formed by the polymerization, each polymer capsules formed by four small sporangia, small spores with dual airbags, and airbag Pinaceae pollen is similar to large sporophyll from the central axis and arranged in Brachypodium feather composition, Each Yibing has a shell bucket, each bucket containing shell upright ovules 10-12 months.
小孢子叶枝为羽状,小孢子叶由聚合囊组成,每个聚合囊由4个小孢子囊组成,小孢子具双气囊,与松科植物花粉的气囊相似,大孢子叶由中轴及羽状排列的短柄组成,每一柄上有一个壳斗,每个壳斗内有10—12个直立的胚珠。
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Type genus of the Pinaceae: large genus of true pines.
松科的模式属;大的真正的松类。
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In terms of arrangement patterns of endodermal cells and thickening mode of Casparian strips, two types could be identified among the leaves of ten genera.
根据内皮层细胞排列模式和凯氏带加厚程度,我们将松科的10属分成两大类。
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On the basis of the distribution and sedimentation of disaccate pollen from recent coniferophyte, it is inferred that there were subalpine and middle mountains on the Jianhu Uplift during the Early Miocene, where Abies, Picea, Tsuga, etc.
现代山地针叶树的双气囊花粉的散布、沉积作用表明,中新世早期在江苏建湖隆起上,曾有亚高山、中山,其上生长着冷杉、云杉、铁杉等松科植物。
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Through the principal components analysis of 27softwoods,we found that the directionality of cell arrangements was accordant with theevolution order of Ginkgoaceae,Pinaceae,Taxodiaceae,Cupressaceae,the more evolutivewood species,the stronger directionality of cell arrangements along radial,but thedirectionality of cell arrangement along the radial of Larix spp.which was abrupt changedspecies was comparatively weak.
通过对27种针叶材的主成分分析,发现木材细胞排列方向性强弱基本符合银杏、松科、杉科、柏科的进化顺序,越是进化的树种木材径向排列的方向性就越强。另外,落叶松属等早晚材急变的木材径向排列比较弱。
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Small genus of Mexican cycads; sometimes classified in family Cycadaceae.
一种小的墨西哥苏铁;有时被放入凤尾松科。
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The pinaceae also is a quite ancient branch.
松科也是一个相当古老的科。
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Variously classified as member of Pinaceae or Taxodiaceae.
通常被认为是松科或杉科的一属。
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Pinaceae A family of conifers that bear separate male and female cones,and in which the seeds are borne between the cone scales and do not have arils.
松科:指产生分离的雌雄球果的针叶类植物的一个科。其种子产生于珠鳞之间,且无果皮。
- 推荐网络例句
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The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.
此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。
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To get the business done, I suggest we split the difference in price.
为了做成这笔生意,我建议我们在价格上大家各让一半。
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After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.
一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。