在翼型或机翼的风洞试验中，常用绊线或局部表面粗糙度来固定边界层转捩。
In wind tunnel test, tripping wires or a local surface roughness are often applied to fixing the boundary layer transition on airfoils or wings.
环境中有许多其他因素会影响性能，包括网络使用率、服务器上的其他程序、拒绝服务攻击以及电源线被绊断。
Many other factors in the environment can affect performance, including network utilization, other programs on the server, denial of service attacks, and tripping over the power cord.
这人穿着深绿色的线绒衣，带着脚绊……老式的样子，红润的脸孔，红的髭须，和冷淡的眼睛。他正迅速地向山下走去。
He was a man in dark green velveteens and gaiters... the old style, with a red face and red moustache and distant eyes. He was going quickly downhill.
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