封闭

Consequently, it is often necessary to close a series of basin s by means of sluices and thus maintain a constant water level in the closed port section.

因此有必要使用泄水闸来封闭一些港区，以保持封闭港区中的水位。

Consequently, it is often necessary to close a series of basins by means of sluices and thus maintain a constant water level in the closed port section.

因此有必要使用泄水闸来封闭一些港区，以保持封闭港区中的水位。

Factory covers an area of 45,000 square meters, construction area of 22,000 square meters, with total assets of 20,600,000 yuan, the main products have GCS, MGS, GXL series Switchgear; XM lighting distribution box; high-performance anti-corrosion of steel cable tray XQJ , NDCH fire-resistant cable groove box, XQJG FRP bridge, LQJ bridge aluminum alloy; BGFM total box closed busbar, QLFM from phase enclosed bus and other products.

厂区占地面积4.5万平方米，建筑面积2.2万平方米，拥有总资产2060万元，主要产品有GCS、MGS、GXL等系列开关柜；XM照明配电箱；高效防腐XQJ钢制电缆桥架、NDCH耐火电缆槽盒，XQJG玻璃钢桥架，LQJ铝合金桥架；BGFM共箱封闭母线、QLFM离相封闭母线等产品。

Bridge of Sighs in Venice extreme is the Municipal Palace, as well as the Republic of Venice, then the Court and the Governor's House seat Bridge of Sighs in Venice subguadratic is then repeated the prison, which is a closed Shilou.

叹息桥的左端是威尼斯的市政宫，也是当年威尼斯共和国法院和总督府的所在地，叹息桥的右端是当年威尼斯的重犯监狱，那是一个封闭的石牢，粗粗的铁栏杆封闭着一个不见天日的地狱，据说进了这个监狱，几乎没有人能够活着出来。

According to the parameters of the pressure,the sealing abilities of the cap rocks could be divided into six grades,and the complex grading evaluation criteria of gas cap rock sealing ability that is suitable for China is established.

利用以突破压力为主的相关参数，将盖层封闭性能划分为6个等级，建立了适合我国特点的天然气封盖层封闭能力的综合分级评价标准。

By the study of influence factors, the logarithmic relation between effective juxtaposition thickness of cap rock destructed by fault and gas column height sealed by cap rock was found.

根据我国部分与断层有关的大-中型气田气柱高度资料，发现了有效断接厚度与所能封闭的最大气柱高度的对数线性关系，并由此提出了评价被断层破坏的盖层封闭能力的新方法。

Referring to regular cuboids, two different performance functions are presented for irregular enclosures in this paper. The optimum voltages applied on PZT patches for active noise control are obtained by minimizing two performance functions.

参考长方体封闭空间的情况，本文在不规则封闭空间的有源消声中提出了两种控制目标函数，通过使控制目标函数最小化得到了有源消声控制电压的最优值。

There are two modeling methods used in this research area, that is analytical method and numerical method. Analytical method can be used to analyze the sound pressure within enclosures, and to analyze the control mechanisms theoretically, however it can be used for regular cuboids only. Numerical modeling method can manage enclosures with arbitrary boundaries, nevertheless, the results obtained using this method are dispersed sound pressure. It is hard to conduct real time control with this method. The two modeling methods have their own inherent defects.

对于封闭空间的结构声辐射，目前有解析建模和数值建模两种建模方法，解析建模方法可以从理论上对系统进行分析，探讨消声机理，但它只适用于长方体等规则封闭空间；数值建模方法不受空间边界形状的限制，得到的是空间声压的离散结果，难以用于实时控制，两种方法都存在着局限性。

In this part, the set of CODONs is extended so that both open and closed curves containing straight lines and cusps can be completely represented.

该部分研究主要将传统的基于封闭光滑轮廓的CODON编码推广至任意非封闭非光滑曲线，使图像的CODON编码能更加完备地表征图像轮廓。

Compared to other models pointed out by foreign scholars, my model was characteristic of multiple periods during evolution of urban systems, complexities of the course of forming urban systems, multiple types of urban functions, periodicity of regional changes of the important regions of urban development, periodicity of dominances of inland central city and seaport gateway city.

此后，随着海疆由开启转为封闭，再由封闭转为开启，最大城市由青岛转为济南，再由济南转为青岛；中心地职能体系由&青岛单中心体系&转换为&青岛、济南双中心体系&，再转换为&青岛单中心体系&；工业发展重点区域也由沿海转向内陆，再由内陆转向沿海；口岸城市的门户职能强度也经历了增强、减弱、增强的不对称&U&型变动；城市体系的空间结构经历了碎化—整合—碎化的过程。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。