double rows meaning in English

双线纺织的目脚

Serrated lock washers . double row of teeth . plain form
双排齿锁紧垫圈.普通型
Rolling bearings ; spherical roller bearings , double row
滚动轴承.双列球面滚柱轴承
Rolling bearings ; double row radial contact ball bearings
滚动轴承.双列向心球轴承
Forcing distribution of buried double row anti - slid piles
全埋式双排抗滑桩的受力分布
2 70 mm photographic films with double row of perforations . type 2
双排孔70mm摄影胶片

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