With the passage of time, the wall that the corrosion and scale and become loose, and be compressed air away.
随着时间的推移，管壁的锈蚀物和结垢变得疏松，并被压缩空气带走。
Thirdly, there is a discussion about scale economy and scope economy of airline alliance in this passage.
再次，本文对航空公司联盟的规模经济性和航空公司联盟的范围经济性进行了论证。
Small scale charts are intended for offshore navigation and passage planning.
小比例尺海图供远离海岸航行和航线设计使用。
Suppressed by the up passage vortex at upstream side of blade, the intensity and scale of the tip clearance leakage vortex is decreased.
渐缩型间隙在叶片前半轴弦受到上通道涡的抑制，减少了叶顶间隙泄漏涡的强度和范围；
Suppressed by the up passage vortex at upstream side of blade, the intensity and scale of the tip clearance leakage vortex is decreased.
渐缩型间隙在叶片前半轴弦受到上通道涡的抑制，减少了叶顶间隙泄漏涡的强度和范围；
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