在任何超过一般跨距间隔的跨距中不得使用管件或接头。
Fittings or splices shall not be permitted in any span that exceeds the normal span interval.
应在所有管件处以及第12.2段中规定的一般跨距间隔处为托架、管槽及转角系统提供支撑。
Supports for tray, channel, and Angle systems shall be provided at all fittings and at the normal span intervals specified in paragraph 12.2.
阐述了基于UG铣加工过程3d跨距的原理，探讨其在曲面铣削中的应用。
This paper introduces the principle in 3d Stepover of milling manufacturing process based on UG and discusses its application in surface milling.
在综采放顶煤工作面顺槽掘进过程中，由于顺槽煤层顶板松动破碎，并且顺槽采用矩形断面，顶板跨距较大，不利于巷道支护。
During the drivage of main-gate in long-wall face with fully mechanized caving mining, the gate is hard to support due to its loose and broken roof, large cross-section and long span.
悬臂桥在利用中间桥墩的长跨距桥中它通常是不可行的桥梁结构。
Cantilever bridge piers in the use of long-span Bridges the middle it is usually not feasible in the bridge structure.
摘要：介绍了我国大支撑跨距离心压缩机在现实工作中的应用。对大支撑跨距离心压缩机的设计技术难点进行分析。
Abstract: This paper has analyzed the design and technical difficulties of centrifugal compressor with largely supported span and its application in realistic job.
摘要：介绍了我国大支撑跨距离心压缩机在现实工作中的应用。对大支撑跨距离心压缩机的设计技术难点进行分析。
Abstract: This paper has analyzed the design and technical difficulties of centrifugal compressor with largely supported span and its application in realistic job.
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