双承接口 double-socket pipe
双列轴承 [机] double row bearing
双轴承 duplex bearing
双止推轴承 double thrust bearing
双滚珠轴承 TWO BALL ; Two Ball Bearing
双列双向推力轴承 [机] double row double-direction thrust bearing
双罩轴承 double shield bearing
双重承认 dual recognition
双支承舵 double bearing rudder ; two bearing rudder
双列滚珠轴承 double row ball bearing ; two row ball bearing ; double-row ball bearing
现场施工效果表明，双封单卡分段压裂管柱在承压性能及过砂量要求上，能满足要求；
Field application results show that the string of double-sealing and single-stick subsection fracturing can meet the demands of pressurization behavior and sand amount.
海淀公园人行天桥位于北京海淀公园内，其钢-混凝土组合连续梁为双线双曲下承式箱梁。
The pedestrian overbridge of Haidian Park is located in Beijing Haidian Park, whose steel-concrete continous beam is a bifilar and hyperbolic through box beam.
论文提出的双柱联合浅基础和双柱联合桩基承台的设计计算方法可供工程设计人员参考。
Designers may refer to the design-calculation methods which are suggested in this thesis in terms of double-column combined shallow foundation and double-column combined pile caps.
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