植株树干用铝制套筒包着.Aluminum sleeves were placed around the stems.套筒必须将预计中积雪最高处以上的茎干包裹着.The sleeves must cover stems to a point above the greatest expected snow accumulation.此外, 在 长期 的使用以后套筒冠的固位力可能有显著地下降.Additionally, a marked d...
铰孔是孔的精加工手法之一.Reaming is one of the finish machining methods of hole.铰孔或攻丝时,不要用力过猛, 以免折断铰刀或丝锥.Do not overexert when reaming holes or threading, lest breaking off the reamer or the tap.点位系统适用于钻孔 、 锪 孔、扩孔 、 铰孔 、 镗孔 、 攻丝等孔加工...
能见度很差。Visibility was poor.能见度为。019。The visibility readout is .019.尽管能见度极差,飞机由雷达导航返航了.The pilot homed in by means of radar, despite the poor visibility....
The model of vibration picking for a vector hydrophone is established.摘要本文建立了矢量水听器的拾振模型,并分析推导了其拾振条件.Fiber optic hydrophone unit is the basis of fiber optic hydrophone system.光纤水听器探头是光纤水听器系统的基石.Compared with the pressure ...