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- Thread, hole patterns and Reticulate smaller catheter and tracheid. 見(jiàn)放射狀條紋。See radial stripes.;螺紋、孔紋和網(wǎng)紋導管及管胞較小。
- Tracheid An elongated xylem conducting element with oblique end walls. 管胞：具有傾斜端壁的延伸的木質(zhì)部運輸分子。
- Tylose A bladderlike ingrowth from a parenchyma cell into an adjacent tracheid or vessel through a paired pit. 侵填體：薄壁細胞向內生長(cháng)的泡狀物通過(guò)紋孔伸入相鄰的管胞或導管形成的結構。
- Spur of the great marrow, pulp tissue is often full of thick red crystal, tracheid also larger. 所以，仔細觀(guān)察這些痕跡，可以對該鈴技的年齡及歷年的生長(cháng)結實(shí)狀況作出初步判斷。
- Vascular bundle have not cambium layer, vessel, and spiral tracheid as well.Only sieve element. 維管束無(wú)形成層，無(wú)導管，也不具有螺紋管胞，只有篩分子。
- Fiber-tracheid An elongated cell with bordered pits found in wood, intermediate in form between a fiber and a tracheid. 纖維管胞：木材中具有具緣紋孔的細長(cháng)細胞，是纖維和管胞的中間類(lèi)型。
- A kind of silicified fossil wood with mixed pits on the radial tracheid wall is described. 報道了一種具混合型紋孔(互列式紋孔和對列式紋孔)的化石木。
- It fills the blanks in the study on the vasiform mic- rofossils in Dengying Formation, Sinian System, and sheds a light on the re- search of the formation and evolution of Late Precambrian to earliest Camb- rian shelly animals. 它的發(fā)現是繼湖北房縣下寒武統西蒿坪組和峽東地區震旦系陡山沱組發(fā)現瓶狀微化石之后的又一新產(chǎn)地和層位,填補了震且紀燈影期該類(lèi)化石的空白,對探討由晚前寒武紀束期至早寒武世早期的帶殼生物的發(fā)生和演化具有重要意義。
- It is thought to act like a valve, sealing the pit when the pressure on the two sides is unequal, e.g. when an adjacent tracheid is damaged. 它的作用相當于一個(gè)瓣膜，當紋孔兩側的壓力不相同時(shí)，可以封閉紋孔。例如：當鄰近的管胞被破壞就會(huì )出現壓力相異的情況。
- The prophase variation curve of proportion of tracheid appeared as "Trapezoid" and the latter variation curve appeared as "V" from pith to outward. 樹(shù)脂道比量由髓心向外，開(kāi)始緩慢下降，然后迅速上升達最大值后又迅速下降。
- The relationship between the proportion of wood ray, the proportion of resin and the proportion of tracheid was significant. 術(shù)射線(xiàn)比量、樹(shù)脂道比量和管胞比量都受到中等水平的遺傳控制，無(wú)性系重復力分別是：0.;571、0
- Among the seed sources the timber air-drying density, mechanics intensity and the tracheid wall ratio were not significant different. 濕地松不同種源木材氣干密度、抗彎強度、抗彎彈性模量、順紋抗壓強度與沖擊韌性的廣義遺傳力分別為0.;3927、0
- Genetic variations of growth traits, wood basic density and tracheid length of Chinese fir clones were investigated in this paper. 摘要對杉木無(wú)性系生長(cháng)性狀、木材基本密度和管胞長(cháng)度的遺傳變異進(jìn)行了研究。
- The transition age between the 2 wood zones was at the 25th growth ring for red pine specific gravity arid at the 33rd growth ring for Taiwan red-cedar tracheid length. 其林齡，紅松以比重方法求得者為25年，臺灣紅檜以管胞長(cháng)決定者為33年。
- In this paper, 12 years old Chinese Fir clones were studied on the genetic variation of growth properties, basic density and tracheid morphological characteristics. 本文綜合研究了12年生杉木無(wú)性系試驗林的生長(cháng)性狀、基本密度和管胞形態(tài)的遺傳變異規律。
- Longer tracheid length，bigger tracheid diameter，thicker tracheid walls，smaller microfibrillar angles are the characteristics of the mature wood compared with those of the juvenite wood. 池杉成熟材的管胞長(cháng)度、直徑、壁厚比幼齡材大，纖絲角??；
- The tracheid wall in stems appears convexo-concave, and some tracheids are forked or branched. 莖中管胞的側壁呈現凹凸不平,部分管胞具有分枝或分叉現象。
- tracheid morphology characteristics 管胞形態(tài)特征
- Tracheid double wall thickness-diameter radio 壁腔比
- THE FLOW-RESISTOR AND GAS PERMEABILITY OF SOFTWOOD TRACHEID 針葉樹(shù)材管胞氣體滲透流阻及其滲透系數
