head of canal 中文意思是什麼

head of canal 解釋
渠首
  • head : n 1 頭，頭部，首。2 頭腦，才能；智力，想像力，理解力。3 前部，上部；頂端，尖突部；船長；（書頁等...
  • of : OF ＝Old French 古法語。
  • 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. Head about 1 / 5 of its total length ; body naked, with only one row of lateral line canal scales in both side

    頭長約為全長的1 5 ，骨化程度高。背鰭基寬，約為全長的1 4左右。
  2. Two aspects of the problem are discussed : one is that lift irrigation is no need when abstraction volume capability of canal head can meet the demand ; the other is that lift irrigation is in need when abstraction volume capability of canal head can not meet the demand

    它包括兩個方面：一是當渠首可引水量能滿足灌區灌溉用水量時，則不需要提水灌溉；二是當渠首可引水量尚不能滿足灌區灌溉用水量時，則需提水灌溉來補充灌溉用水量。
  3. Methods ： fifty paired embalmed cadaveric humeri ( twenty - five pairs : fourteen from male donors and eleven from female donors ) were scanned in medial - lateral ( ml ) and anterior - posterior ( ap ) position according to the humeral retroversion by ct. images of the humeri in the transverse planes at the lowest border of neck ( lbn ), 20mm and 40mm distal of lbn ( lbn - 20 、 lbn - 40 ), isthmus, head - neck anterior - posterior ( hn - ap ) were obtained. sixty - one extracortical and intracortical parameters were measured exactly by image analytic computer software that included offset, head position, head - shaft angle, head to tuberosity height ( ht ), head thickness, curvature radius, articular surface arc ( sa ), neck diameter, isthmus position, proximal and distal border of isthmus, maximum coronal and sagittal diameter of medullary canal and thickness of cortical bone in four planes, including lbn, lbn - 20, lbn - 40 and isthmus

    方法： 50根成對防腐肱骨（男14對，女11對）按肱骨頭扭轉角置於冠狀位和矢狀位，行肱骨全長，頭頸矢狀面，解剖頸下緣及其下20mm 、 40mm ，髓腔狹窄部四平面ct掃描，由ct軟體測量冠、矢狀位髓腔內外參數共61項，包括頭心?干軸距，頭位置，頭干角，頭?結節高度差，頭厚度，頭半徑，關節面張角，解剖頸直徑，髓腔狹窄部位置，解剖頸下緣及其下20mm 、 40mm和狹窄部四個平面髓腔的最大冠、矢狀徑，皮質骨厚度等。
  4. Unfortunately, meningitis developed and ct scanning of the head showed temporal bone encephalomenigocele which herniated into the middle ear and external ear canal

    手術時，于懷疑有腦脊髓液漏出之部位做刮搔后，移顳肌瓣予以填塞。
  5. 2. an optimal decision - making model for water resources scheduling of large - scale scheduling district is set up. it can provide a method to achieve maximum net revenue with a fixed service discharge from canal head and a fixed pumpage of pumping station

    建立了大型灌區水資源優化調配決策模型，研究在灌區渠首供水能力和泵站提水能力一定條件下，將灌區水資源如何調配才使得灌區總凈收益達到最大值的優化決策問題。
  6. A sound in one ear or both ears, such as buzzing, ringing, or whistling, occurring without an external stimulus and usually caused by a specific condition, such as an ear infection, the use of certain drugs, a blocked auditory tube or canal, or a head injury

    耳鳴一個耳朵或兩耳中的聲音，如嗡嗡聲或哨聲，在沒有外界刺激的情況下發生，通常由某種特定情況如耳朵感染、使用某種藥物、聽覺管道堵塞或頭部受傷引起
  7. Midway through the canal, however, it must turn to face your back, and the back of its head is pressed against your pubic bones

    他到達產道中段后，就必須轉身，面朝你的背後、后腦勺頂著你的恥骨；那時，他的兩肩分別朝向你的兩側。
  8. 2. builds up decision model for water resource ' s optimal distribution of large irrigation areas in this thesis. this model resolves the optimal decision problem of how to distribute water resource to meet maximal total net profit in irrigation basins, when water supply potential of irrigation areas " canal head and bailing capability of pumping station hold the line

    2 、建立了大型灌區水資源優化調度決策模型，研究在灌區渠首供水能力和泵站提水能力一定的條件下，將灌區水資源如何調配才使得灌區總凈收益達到最大值的優化決策問題。
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