| 1. | The xylem of ferns and conifers contains only tracheids .
蕨类植物和针叶树的木质部仅含有管胞。
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| 2. | Ray tracheid walls smooth or with minute dentations
木射线具单列射线和纺锤状射线。
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| 3. | Bordered pits on tracheids radial walls uni - seriate and bi - seriate rows
交叉场1 - 4枚杉木型纹孔。
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| 4. | A review : current international research into cell wall mechanics of tracheids
管胞细胞壁力学研究进展评述
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| 5. | Annular thickening rings of thickening laid down on the inner wall of protoxylem vessels and tracheids
环状加厚：原生木质部导管和管胞的内层环状?厚。
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| 6. | Where they occur interspersed with the xylem they may be distinguished from tracheids by their narrower lumen
纤维分布与木质部相似，其狭窄的腔可与管胞区分开来。
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| 7. | Fiber - tracheid an elongated cell with bordered pits found in wood , intermediate in form between a fiber and a tracheid
纤维管胞：木材中具有具缘纹孔的细长细胞，是纤维和管胞的中间类型。
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| 8. | Tsuga dumosa richer : the regular presence of ray tracheids . axial parenchyma cells rare and distribute in the boundaries of growth rings
云南铁杉( tsugadumosaeicher ) ：生长轮明显，早材至晚材略急变至渐变。
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| 9. | Tranfusion tissue is present in the leaf of yew . it is composed of three sorts of cells : transfusion tracheids , transfusion parenchyma cells , and albuminous cells
在红豆杉的叶子中存在传输组织，它由传输细胞、传输薄壁组织细胞和蛋白细胞组成。
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| 10. | These genera and ephedra also hve advanced tracheids with a structure reminiscent of angiosperm vessels , whereas in other gymnosperms the xylem is composed solely of more primitive tracheids
这些属以及麻黄属植物和被子植物一样有进化的管胞，而其他的裸子植物的木质部只由很多导管组成。
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