您要查找的是不是：
- Thread, hole patterns and Reticulate smaller catheter and tracheid. 見放射狀條紋。See radial stripes.;螺紋、孔紋和網紋導管及管胞較小。
- 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：薄壁細胞向內生長的泡狀物通過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，仔細觀察這些痕迹，可以對該鈴技的年齡及歷年的生長結實狀況作出初步判斷。
- Vascular bundle have not cambium layer, vessel, and spiral tracheid as well.Only sieve element. 維管束無形成層，無導管，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細胞，是纖維和管胞的中間類型。
- 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現瓶狀微化石之後的又一新產地和層位,填補了震且紀燈影期該類化石的空白,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. 它的作用相當於一個瓣膜，當紋孔兩側的壓力不相同時，可以封閉紋孔。例如：當鄰近的管胞被破壞就會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. 樹脂道比量由髓心向外，開始緩慢下降，然後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. 術射線比量、樹脂道比量和管胞比量都受到中等水平的遺傳控制，無性系重複力分別是：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、順紋抗壓強度與衝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. 摘要對杉木無性系生長性狀、木材基本密度和管胞長度的遺傳變異進行了研究。
- 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，台灣紅檜以管胞長決定者為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年生杉木無性系試驗林的生長性狀、基本密度和管胞形態的遺傳變異規律。
- 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度、直徑、壁厚比幼齡材大，纖絲角小；
- 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 管胞形態特徵
- Tracheid double wall thickness-diameter radio 壁腔比
- THE FLOW-RESISTOR AND GAS PERMEABILITY OF SOFTWOOD TRACHEID 針葉樹材管胞氣體滲透流阻及其滲透係數
