perforated pipe

英 [ˈpɜːfəreɪtɪd paɪp]

美 [ˈpɜːrfəreɪtɪd paɪp]

多（穿）孔管

化学

双语例句

• A new sludge discharging equipment is developed to ameliorate the performance of ordinary perforated pipe for its hard start and jam.
  针对给水厂沉淀池普通穿孔排泥管起动困难易堵塞等问题，研制出一种新型排泥装置&扩张管嘴排泥管。
• Sound propagation in tubular structure containing perforated coaxial pipe
  管道结构中含同轴穿孔管时的声传播特性
• The sonic field transmission matrixes of perforated absorbent pipe is given after the transmission performance of perforated pipe is studied.
  本文通过声波在穿孔声管中传播特性的研究，导出了声波在穿孔声管中传播的声场传递矩阵。
• The lab test and middle test were done at first. The best perforated pipe with divergent tube from middle test is comparied with ordinary perforated pipe in the same condition in practice.
  先后进行了小试和中试，根据中试所得较优的一种扩张管嘴排泥管应用在生产性试验中，在同等条件下与普通穿孔管进行比较。
• The proposed formula lay a solid foundation for further research and design of the perforated drainage pipe system.
  这些公式的建立为渗透式雨水排水系统的理论研究及设计奠定了基础。
• Experiment of full-scale operation in perforated pipe with divergent tube in sludge discharge
  扩张管嘴排泥管生产性试验研究
• Circumferential sprinkling water curing technique utilizing rubber perforated pipe in high pier construction
  高墩施工橡胶花管环向洒水养护技术
• The dimensionless formulae of water head curve was deduced by establishing fluid differential function of perforated pipe and three categories of conditions to discriminate the water head distribution were given, so a theoretical method to calculate the distributive uniformity of perforated pipe with best reliability can be made.
  本文通过建立多孔配水管水流的微分方程，推导出计算压力线的无量纲公式，并给出了三种压力分布型式的判别条件，从而为多孔管配水均匀度提供可靠的理论计算方法。
• Studies of acoustical performance of perforated absorbent pipe muffler
  穿孔声管消声器消声性能研究
• However, the traditional exhaust silencers, which are normally constructed by combination of expansion chamber, and perforated pipe or perforated board, are with high exhaust resistance, but poor noise reduction especially for the low-frequency band noise.
  而传统排气消声器大都由扩张室加穿孔管或穿孔板等组合而成，其排气阻力大，消声性能差，特别是对排气噪声中占主导地位的低频部分消声效果差。