反针线松 INSECURE BACK STITCHES

线松弛 [数] line relaxation

天线松 antenna loose

线松弛调整 Cable slack adjustment

帘线松散 loose cords

寇松线 Curzon Line

线松紧调校器 tension regulator

松材线虫 Bursaphelenchus xylophilus ; [植保] pine wood nematode ; PWN

车线松 loose stitching

三线松鼠 three-striped ground squirrel