secondary canal 中文意思是什麼

secondary canal 解釋
二級渠道
  • secondary : adj 1 第二(位)的,第二次的;中級的 (opp primary)。2 副(的);從屬的;附屬的;輔助的;補充的...
  • canal : n. 1. 運河;溝渠,水道。2. 【建築】溝;【解剖學】管,道。3. 【天文學】火星表面的運河狀細長溝紋。vt. (-l(l)-), 在…開運河;在…開溝,疏導。
  1. To adopt well irrigation and well drainage, develop and utilize ground water resources of irrigated area can not only effectively reduce the ground water level and prevent secondary alkalization of the soil, but also provide timely irrigation to crops through well and canal complementary

    摘要灌區灌溉採用井灌井排,開發利用地下水資源,不但能有效降低地下水位,防止土壤次生鹽堿化,還可以通過井渠互補,使農作物得到適時灌溉。
  2. Occurred through giant panda s alimentary canal. the cell wall became thinner, and the rupture and loss of primary and secondary wall was observed. therefore, it showed that giant panda has the ability to digest part of components of cell wall, such as pectin and semicellulose, etc. furthermore, it is possible that giant panda can digest a little cellulose. the morphological method used in this study is a new idea for nutrition research. the ability of utilization of cell wall of bamboo by giant panda is unique in carnivore. it is adaptation to its phytophage

    Sp .筍細胞壁的利用狀況,利用石蠟切片半薄切片和超薄切片技術,通過光鏡和透射電子顯微鏡觀察,對比研究野生大熊貓食物和糞便中的松花竹筍細胞壁的形態。發現竹筍經過大熊貓的消化后,其細胞壁在形態上有明顯的變化,薄壁細胞細胞壁變薄,厚壁細胞初生壁和次生壁都有部分消失缺損或扭曲。
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