Double Wall Bellow Swal 双层波纹管
double-wall corrugated pipe 双壁波纹电缆套管
double wall tube 双层管
double wall box 复壁纸箱
double wall funnel 夹壁漏斗
double-wall corrugated paper 双壁瓦楞纸
double wall cooling roll 复壁冷却辊
double wall corrugated board 双层瓦楞纸板
double wall breakwater 双墙防波堤
double wall tank 双壁罐
By last year, Wall Street traders, bankers and those who deal in real estate generated 21% of the national income, double their share in the 1950s.
截至去年，华尔街交易员、银行家和从事房地产交易的人创造了21%的国民收入，是上世纪50年代的两倍。
A combination of these two methods is particularly effective for producing medium-large double-wall pipes.
两种方法相结合，特别有效于生产大中型双壁管材。
Relative of similar products on the side window glass and double wall design, the three layers of lateral wall design has better security.
相对同类产品的玻璃边窗和双层侧壁设计，此种三层侧壁设计具有更好的安全性。
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