1) double-layered tube
双层管
1.
In the theoretical analysis of double-layered tube hydro-forming,the calculating process is very complicated and difficult not to obtain accurate analytical solution and meet engineering application with the actual stress-strain curve of inner tube.
双层管液压成形理论分析中,以内层管真实应力应变曲线的计算过程相当复杂,很难得到准确的解析解且难以满足工程的需要。
2.
Based on the analysis and generalization of former research,the equivalent yield strength method suitable for hydro-forming of double-layered tubes was put forward,and the concrete approach to determine the equivalent yield strength was given.
胀合液压力的大小在双层管液压胀合过程中起着决定性的作用,因此准确地确定胀合液压力的范围至关重要。
3) double-layered copper pipe
双层铜管
4) double coils
双层蛇管
1.
The heat transfer coefficients of stirred vessel equipped with double coils were measured with water as heat transfer medium,using composite impellers.
以水为传热介质，采用组合桨，测定了装有双层蛇管的搅拌釜的传热系数。
5) two concentric sleeve pipes
双层套管
1.
Based on the energy conservation law,an expression formula for calculating the wetness of flowing wet steam measured by heating method for directly heating two concentric sleeve pipes,which are thermally isolated and electrically insulated from each other,an instrument used for measuring wetness of the flowing wet steam has been designed.
提出了一种以能量守恒定律为基础,用于加热法测量流动湿蒸汽湿度的计算表达式,并以此设计了一种彼此同心、相互绝热和绝缘的双层套管直接加热的实现流动湿蒸汽湿度测量的仪器。
6) double-layer pipe roof
双层管棚
1.
Numerical analysis of pre-reinforcement action about double-layer pipe roof in multi-arch tunnel under the existing highway;
下穿公路连拱隧道双层管棚预加固作用数值分析
补充资料：双层钎焊管
分子式：
CAS号：
性质：又称邦迪管。把钎焊方法用于钢管工业，生产的双层钎焊管。邦迪管是3～12.7mm的小直径双层焊管，一般用低碳钢制造。主要生产工序有：冷轧带钢镀铜、卷管成型、加热钎焊、切断等。邦迪管优点是：尺寸精度高，壁厚均匀，偏心度小，加工性能好，承受压力和振动疲劳的能力大，防锈能力强，容易镀层。这种管主要用于汽车、拖拉机和冷冻机上。
CAS号：
性质：又称邦迪管。把钎焊方法用于钢管工业，生产的双层钎焊管。邦迪管是3～12.7mm的小直径双层焊管，一般用低碳钢制造。主要生产工序有：冷轧带钢镀铜、卷管成型、加热钎焊、切断等。邦迪管优点是：尺寸精度高，壁厚均匀，偏心度小，加工性能好，承受压力和振动疲劳的能力大，防锈能力强，容易镀层。这种管主要用于汽车、拖拉机和冷冻机上。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条