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汉语拼音：wān guǎn

1.弯曲的管子。

2.某些鸟类的似骨的管，它连接中耳与颚弯曲部分的气室。

• Friction losses in the equivalent lengths of ducts constitute the pressure loss in the elbow.

  管道的等量长度中的摩擦损失即构成弯管中的压力损失.

• The feasibilities of small - radius pipe - bender made in china are demonstrated in technique.

  对小半径弯管国产化的可行性,作了技术论证.

• Double - dog ratchet prevents shoe spring - back during bends; allows fast release after bending.

  双 棘齿 机构防止弯管过程中压模弹回,且有利于弯管结束后快速松脱.

• Are the flex connectors listed the only units you manufacturer?

  所列出的弯管接头是你们所生产的唯一的装置 吗 ?

• Hydraulic pipe bender is the important equipment for piping construction.

  液压弯管机是管道施工的重要装备.

• Introduce an experimental analytics axis - thrust tube bending on horn mandrel.

  介绍了一种分析牛角芯棒上热推弯管成形过程的实验解析法.

• The section of a band or an orchestra composed of woodwind instruments.

  文艺复兴时期的带有双簧片和弯管的木管乐器.

• The buyer in that factory bought single offset quarter bends.

  那个工厂的采购员购买了单侧偏置90度弯管.

• The discharge coefficient for each elbow flowmeter should be calibrated in practice.

  每个弯管流量计的流量系数须经过实际标定.

• The company successfully developed a fully automated MF 800 T hydraulic pipe bender.

  公司成功研制了800吨全自动化中频液压弯管机.

• The measuring principle of the bent tube measuring machine is described.

  论述厂接触式弯管测量机的测量原理,并给出其具体方案.

• A below of cooling water pipes of acrylonitrile reactor bursted.

  某化工厂丙烯腈反应器冷却水管弯管部位发生爆管.

• Bending the heat exchanger hairpin tube.

  冷冻空调机械散热器铜管弯管自动制作.

• The'ductus'represents the framework of a type.

  上面的 “ 弯管”体现了这个字体的结构.

• Bending pipe cutting machine.

  弯管机,切管机.