查询词典 duct

The air duct must be designed and installed in accordance with national design code for HVAC duct.

风管设计和安装必须符合国家暖通空调管道设计规范。

Presents some kinds of air duct cleaning equipment suitable for different air conditioning systems and the technology process of air duct cleaning .

介绍了几种适用于不同空调系统的风管清洗设备以及风管清洗的工艺流程。

Duct the moist air away.a duct that admits air to be mixed with fuel.

一种能让空气和燃料混合的管道，如煤气管。

It becomes the research focus of navy all over the world. Owing to the anomalous distribution of sea and land、coast landform、offshore wind and shoreward wind in shore, it often causes the alongshore effect of the evaporation duct. This effect will debase the veracity of the evaporation duct diagnosis.

然而由于其形成机制复杂，且在近岸沿海地区由于海陆分布不均，以及海岸地形和海陆风等因素的作用，会造成蒸发波导的近岸效应，这种效应会影响蒸发波导高度诊断的准确率。

Finally, applications of the anomalous propagation of microwave in tropospheric ducts are discussed: in connection with concrete radar parameters, effects of ducts on radar range and detection performance are discussed, the results obtained are of great value for the overall design of radar systems; by use of the interference standards of ITU-R, the co-ordination area of satellite earth-station under tropospheric ducts environment is studied ; by explaining the relationship between evaporation duct and advection fog, a new way to forecast sea advection fog from evaporation duct is provided.

最后讨论了对流层大气波导环境下电波异常传播特性的应用：结合具体的雷达系统参数，模拟计算了大气波导对雷达作用距离及发现概率的影响，对雷达系统的总体设计具有重要的参考价值；对表面大气波导环境下的卫星地球站通信协调区域进行了确定，从理论上很好地给出了协调距离量级的概念，为卫星地球站与地面微波站之间的协调提供了依据和参考；分析了利用海面蒸发波导来快速预测平流海雾的新方法，完善了平流海雾的预报方法，对海上安全作业和生产具有重要的意义。

Methods The approach is based on the 39 cases which had been diagnosed as biliary duct ascariasis through ultrasonic examination and later been confirmed clinically from March,2003 to May,2006 in Changhang Hospital,according to which we analyze manifestations and clinical significance of biliary duct ascariasis and its complications.

摘要］ 目的通过分析和总结胆管蛔虫症的声像图表现及其临床意义来提高对本病声像图的认识及诊断符合率方法通过回顾性分析我院2003年4月～2006年5月超声诊断胆管蛔虫症、临床最后确诊的39例病例资料，分析胆管蛔虫及其并发症在超声图像上的表现和临床意义。

Based on the previous MHD duct flow experiments, the law of mass conservation, the law of charge conservation and the Lorentz force as well as the principle of equivalent circuit, a simplified theoretical method to analysis MHD effect of duct with FCI is developed.

基于先前的普通管道中的MHD效应的实验结果和质量守恒定律（或液态流体不可压缩原理）、洛仑磁力定律和电荷守恒定律，再利用有源网络等效方法，发展出一种简化而有效的分析带通道插件管道的磁流体动力学效应的方法。

Methods 8cases severe adherence acute cholecystitis,10cases repeatedly broken out,the gallbladder recrease fibross,2cases of Mirizzi sydrome the chololith occlude the neck of the cyst,the total chole-cystectomy is difficult,partly retain the gallbladder back wall of cyst,the mucosa is damaged by electrotore,partly anat-omize the cyst duct,close the duct in the proper postion.

8例粘连严重处于炎症急性期，10例反复发作胆囊壁纤维增厚，2例Mirizzi综合征结石嵌顿在胆囊颈部，强行完整切除胆囊困难，采取保留部分胆囊后壁，残留黏膜予以破坏，部分游离胆囊管，在适当位置关闭胆囊管。

In order to compensate for the difference in the height of the cold end center section and the hot end center section and the resulting difference in the distance between the hot and cold center section and between the hot and cold connecting plate duct assemblies, the main support pedestal panels include offsets which extend downwardly along the sides of the cold end center section to meet with the cold end connecting plate duct assemblies.

为了补偿冷气端中心部分与热气端中心部分的高度差，以及由此带来的热气和冷气端中心部分的距离差以及冷热气端连接板管道系统间的距离差，主承重支座板上有一偏移量，它沿着冷气端中心部分的侧面向下延伸直到与冷气端连接板管道系统相连。

The duct that drains the entire gland is the main duct .

整个腺体的导管汇总在一起称主导管。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。