over and under type 中文意思是什麼
over and under type
解釋
升降式-
Through the physical model experiment, the wave forces over submerged dyke and transmission coefficient are analyzed under the action of regular wave. in the test of wave forces, the rectangle - type submerged dyke is used as research object, and when analyzing the total wave forces, the effect of water depth before the dyke and that of the wave parameters is considered. based on the test, through the methods of multi - element linear regression, experimental formulae are given to calculate maximum total wave forces in horizontal direction, its relative vertical wave forces and maximum wave forces before and after the dyke, which are compared with the present formulae
在潛堤波力的研究中，選取矩型潛堤作為研究對象，在分析各個影響因素對潛堤波力影響的基礎上，選取兩個最主要的影響因素，即相對波高和相對水深作為研究重點，在物理模型試驗結果的基礎上，定性地研究分析了潛堤所受的總波力隨相對波高和相對水深的變化規律，並在此基礎上，利用多元線性回歸的方法，分別給出了在本文試驗條件下計算潛堤最大水平總波力及其相對應的垂向總波力的經驗公式以及計算堤前堤后最大總波力的經驗公式，並與已存在的計算公式進行了對比。 -
Fabrication of the box beam is divided into such parts as reinforcement, formwork, concreting, prestressing, moving and storing of beam, pipe grouting under pressure, end sealing of the beam, water - proof layer on the bridge surface system, protective coating etc. the paper makes description of effective box beam construction technology and workmanship which can be adopted in other projects, such technologies as : manufacturing and fixing of reinforcement, steel reinforcement fixing baseplate, web plate and top plate respectively and lifting the steel skeleton into form, requirements of design and manufacturing and way of utilization for dismantling - erection type formwork and hydraulic formwork, optimization of concrete ratio, concrete pouring process of two ends of beam in priority over the middle, in sequence of first baseplate followed by web plate and top plate at last, concrete pouring in inclined section and in horizontal layer, concrete vibration mainly by external vibrator in assistance with internal vibrator, methods and regulation for steam curing of concrete, dual controls over stress and strain to ensure quality of prestressing workmanship, construction method of effective beam moving by heavy - weight special moving facility, some regulations and key notes about construction of grouting under pressure, beam ends sealing, water - proof layer on the bridge surface system, protective coating
箱梁製造由鋼筋工程、模板工程、混凝土工程、預應力工程、移存梁工程、孔道壓漿工程、梁體封端工程、橋面防水層和保護層工程等施工環節組成。文中介紹的採用胎具製作和綁扎鋼筋，分底腹板和頂板分別綁扎並吊裝鋼筋骨架入模；拆裝式和液壓式兩種模板的設計、製作要求和使用方法；綜合考慮、優化混凝土配合比，混凝土灌注從兩端至中間、先底板、后腹板、再頂板的施工順序和斜向分段、腹板水平分層、附著式振搗為主、插入式搗固為輔的施工工藝，蒸汽養護的方法和規定；應力應變雙控制確保預應力施工質量的施工技術；採用重物移運器有效移梁的施工方法；壓漿、封端、橋面防水層和保護層施工的一些規定和注意事項等都是對箱梁製造行之有效的施工技術和施工方法，並可為以後類似施工作借鑒。 -
If we do not eat enough, under - nutrition and symptoms of deficiency are likely to develop, while over - nutrition and obesity can be resulted when we consume an excessive amount of any type of food
如果吃得不夠，就很可能出現營養不良，營養缺乏的癥狀也可能出現；若進食任何種類的食物過量，則可導致營養過多或肥胖。 -
According to the experience of under - excitation operati on of the same type units and the suggestion of manufacturers, the generator excitation system was improved to ensure stable function of auto voltage adjusting device during over - excitation and under - excitation operation
根據同型機組進相經驗和廠家意見改進發電機勵磁系統，保證過激、欠激狀態時自動電壓調整裝置運行穩定。
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