此外，有部分用户还随意水泵进、出管的管径，这些对扬程也有一定的影响。
In addition, some users can pump into the pipe diameter, which head will have an appreciable effect.
指出主胰管宽径有随年龄增长而增宽的趋势，并在男、女性别间有一定差异性。
The diameter of the main pancreatic duct is increased with the age. There is a significant difference.
对采用负压定径技术生产大管径聚乙烯管的挤出成型工艺及其主要设备进行了研究。
The extrusion molding process and main equipment for producing PE large diameter pipe with negative pressure sizing technology are studied.
文中还分析了在摩擦阻力系数一定的情况下，流量与管径的制约关系。
The conditionality between the flow rate and the pipe diameter is discussed when the friction factor is fixed.
针对双文氏管湿法除尘系统一级文氏管喉口存在的问题，开发设计了矩形定径式喉口。
Based on the problems existed in Venturi tube throat of double Venturi tube wet cleaning system, the rectangle sizing throat is developed and designed.
在成型和定径时运用成组技术，可用一套开口孔型辊、定径辊生产一组外径相近的焊管。
With the grouping technique it is allowed to produce a group of tube sizes with similar O.
该法对其它小管径低流速系统有一定的参考价值。
This method is of some reference value for other low flow velocity system with tube of small diameter.
该法对其它小管径低流速系统有一定的参考价值。
This method is of some reference value for other low flow velocity system with tube of small diameter.
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