main channel 中文意思是什麼
main channel
解釋
幹流-
The studying on the mechanism of beiyin main channel gliding slope heilongjiang beiyin project lies in the west of heilongjiang which lies the center of nenjiang. geographical location is east longitude 124 - 126 ? and north latitude 46 - 48 ?. aims of the project are providing water to petrol and chemical industry of daqing and living water. at the same time it is also a big comprehensive conducting water project without dam which resolves 24 irrigation regions of beiyin using water along beiyin
黑龍江省北部引嫩工程位於黑龍江省西部，地處嫩江中游左岸的松嫩平原腹地，地理位置在東經126度128度，北緯46度48度之間。該工程以滿足大慶石油和化工生活用水為主，同時解決沿途24個分灌渠用水的綜合性大型無壩引水工程。 -
He got clear of the other craft at the quayside and found the main channel out of the harbor, marked by buoys.
他躲開碼頭邊上的船隻，根據浮標找到了駛離港口的主航道。 -
Agricultural products wholesale markets ( hereinafter called " apwm " ) have been main channel for circulation of fresh agricultural products in china. yet, with the modernization of the circulation mould, supermarkets, shopping malls, chain - stores, modern distribution centers and e - commerce will take off some turnover from apwm
但隨著農產品流通方式的現代化，超級市場及連鎖店、現代生鮮加工配送中心、電子消費類網站等均會分流農產品批發市場的交易量。 -
In addition according to the comparison of typical floods the impact of floodplain morphology to the flood propagation was studied. no continuous water body in main channel and floodplain and the change of floodplain morphology and the increased flood detention capacity caused the time of flood propagation increasing and the flood types changing in abnormally
同時通過對典型洪水的對比分析，研究了灘地邊界條件對洪水運行的影響，認識到由於主槽與灘地水體不連續以及灘地地形的改變，灘地蓄洪能力增大，造成洪水傳播時間增長和洪峰峰型的異常變化。 -
By the analysis and study, it is showed that : 1 ) the lower weihe river main channel was at a balanceable state between aggradation and degradation and floodplain of the lower weihe river is a tiny aggradation state before the construction of the sanmenxia dam ; 2 ) the severe aggradation of the lower weihe river bed is mainly caused by the increasing riverbed elevation at tongguan after the construction of the sanmenxia dam ; 3 ) the main reason leading to the increasing riverbed elevation at tongguan is the unreasonable operation of the sanmenxia reservoir ; 4 ) the rate of the riverbed aggradation at tongguan reach and the lower weihe river reach are speeded by adverse condition of incoming water and sediment recently
然後以實測資料為基礎分析研究了三門峽建庫前後潼關高程的變化規律以及渭河下遊河道的沖淤演變規律，分析研究表明：建庫前渭河下游主槽處于動態沖淤平衡狀態，灘地處于微淤狀態；建庫后，渭河下遊河道發生嚴重淤積主要是由於潼關高程的抬升造成的；潼關高程的抬升主要是由於三門峽水庫的不合理運用造成的，近期不利的水沙條件加劇了潼關河床的抬升速度和渭河下游的淤積。 -
3. a three - dimensional - acoustic doppler velocimeter has been used to measure the velocity and turbulence in a compound channel with vegetated and unvegetated flood - plains. particulary in the interface region between main channel and floodplain. the distribution in three coordinate directions of velocity and turbulence intensities and the renolds stresses are presented. the momentum transfer at the main channel flood - plain interface can be described as an apparent shear stress which can be quantified as a function of the local turbulence at the interface
採用adv對灘地種樹前後灘槽交界區域的流速場進行了量測。分析了灘槽交界區域的垂線流速、紊動強度和雷諾應力的變化。將灘槽交界的動量傳遞描述為一表觀應力，這個表觀應力可以看作是交界面處的脈動函數並將其定量化。 -
In this paper, some characteristics of flow movement and sediment transport are analyzed by using the flume experiment data. the cross section of compound channel can be divided into four regions : the undisturbed region in main channel, the interactive region between channel and plain, the undisturbed region in flood plain and the boundary region. in the undisturbed regions, the distribution of longitudinal velocity along the depth has the feature of lograithmic. whereas, in the interactive region, the longitudinal velocity does not obey the logarithmic distribution law, but it can expressed as a revised logarithmic function by using a wake function. on the basis of the kinematic equation the velocity distribution of transverse velocity is obtained. in the boundary region, the longitudinal velocity obeys the law of parabolic distribution. furthermore, according to the simplified diffusion equation, the transverse distribution of sediment concentration in the interactive region is deduced. the analysis is in good agreement with the measured data
本文根據漫灘水流的運動特點，將漫灘水流的復式斷面分為主槽平衡區、灘槽交互區、灘地平衡區及邊壁區等4個區，並給出了各區寬度的經驗公式.根據灘槽交互區垂線流速分佈的變化特點，提出了附加尾流函數的對數流速分佈公式.在簡化水流運動方程和泥沙擴散方程的基礎上，對灘槽交互區內垂線平均流速及含沙量沿橫向分佈進行了理論分析，提出了反映灘槽水流動量交換強度的橫向渦量粘性系數及橫向擴散系數的表達式，得到了漫灘水流垂線平均流速及含沙量沿橫向分佈的解析解，並與實測資料吻合較好 -
The characteristic of bed regulating is that the width and area of main channel and medium flowing channel increased greatly during the sustained silting period and decreased during scouring period
河道調整特點為持續沖刷時期主槽、中水河槽的河寬、面積都明顯增大，持續淤積時期則減小。 -
In the early periods, the objective of the river management is to constraint the braid river in a main channel by using construction of dikes. by control the flood could prevent from river banks flowing away
早期河川治理，以築堤御洪為主，其主要目標在於整理網狀亂流，束范于河槽中，防止沿岸土地浸淹崩坍及流失，達到防災減災的目的。 -
Since boundary of the lower yellow river bed varies with the flow conditions, main channel of the stream continually shrank and flood control becomes rather difficult
隨著黃河下游水沙條件的不斷變化，河道的邊界條件也隨之發生變化，主槽嚴重萎縮，泄洪能力日臻下降，防洪問題日益突出。 -
Because the yili river belongs to plain broad and shallow moving river, the main channel changes greatly and swings to a large range, which leads to river crooked branching river type and s curved, many fork rivers, the river continent and the river beach in river center, alluvial shoal and beach. the width in some section of the river is up to about 3800m. in flood season it causes serious harm to farmland, factories, residents along two sides
由於伊犁河屬于平原游蕩性寬淺河流，主槽變化不定，擺動幅度極大，河道多呈彎曲分叉河型和s型彎道、多叉河、河心洲，河心灘和沖擊淺灘及邊灘，部分河段河床寬度達3800m ，洪水季節對河道兩岸的田地，工廠，居民等造成極大的危害，素有「三十年河東，三十年河西」之稱。 -
Analysis on variations of particle size of sediment in the main channel of the lower yellow river
黃河下遊河道主槽淤積物粒徑變化分析 -
The results also show that the lateral flow exchange between tributary and main channel is proportional to the variation rate of the discharge in main channel
將該模型應用於歷史上某次垮山堵江潰決洪水，得到的計算結果與實測資料和洪痕數據相吻合。 -
Improved water quality in recent years has made the main channel popular for rowing and other kinds of boating events, such as dragon boat races
近年水質改善後，城門河主河道成為居民劃艇和進行船艇賽事的熱門場地，其中包括一年一度的舟競渡。 -
First, erosion resulting from excessive deforestation in the upper reaches of the river and, second, heavy silting which raised the riverbed in the main channel
第一，過度砍伐引起的河流上游的侵蝕，第二，嚴重的泥沙淤積抬高了主幹道的河床。 -
Article 37 the state - owned commercial organizations and the collective commercial organizations such as supply and marketing co - operatives shall strengthen the construction of storage facilities, provide market information, improve the purchasing work, play a role of main channel, and offer service to peasants in their selling of agricultural products
第三十七條國有商業組織和供銷合作經濟等集體商業組織應當加強倉儲設施建設、提供市場信息、改進收購工作，發揮主渠道作用，為農民銷售農產品服務。 -
In chapter 5, the main channel impairments, such as rain attenuation, clear air absorption and distortion due to the hpa, are covered and approaches to overcome them are suggested
從雨衰、大氣的吸收以及高功率放大器hpa等方面對lmds系統的性能惡化等方面做了仔細的研究，並針對這些不同的情況，提出了一些建議性解決方法。 -
The transferring of talented people is the main channel for the losing of trade secrets
現代社會，人才流動是商業秘密流失的主要渠道，競業禁止協議成為僱主保護其商業秘密的有力措施。 -
Based on the analysis of satellite images of various periods, landform data and river channel transverse section evolution in the lower yellow river, the characteristics of the river channel boundary condition changes at different location are clarified as middle flood channel flood transport width and area are evidently decreased especially for the main channel with comparison to 1950s, beach area that is unimpeded before become blocked because of road, irrigation channel constructed on it, and consequently intensify high edge of beach and lowering dyke and river
在現場查勘的基礎上，通過對丹江口水庫和小浪底水庫攔沙初期下遊河道演變、排洪能力變化特點的對比，分析了黃河下游防洪面臨的新形勢:小浪底水庫攔沙初期，下遊河道發生沖刷，但艾山以下窄河段沖淤變化不大，近年來形成的淤積萎縮的狀況難以很快改觀，游蕩性河段調整劇烈，工程出險機遇增大，河道水位流量關系中水流量以下部分同流量水位明顯降低，中水流量以上部分水位降低幅度可能會明顯偏小，防洪形勢仍不容樂觀。 -
Finally, the author also analysed the effects of convergence of debris flows on main channel, discussed the discriminant index of hazard of debris flows rushing into the main channel
最後，分析了泥石流入匯對主河河型及河床演變的影響，討論了泥石流入匯危險性評價的判別指標。
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