A releasable fishing spear with sliding blocks is developed in view of the fact that fishes sticking occurred and releasing operation became very hard to succee d.

 
  • 針對普通滑塊撈矛撈獲落物后易卡鉆,解卡不成又不能做進(jìn)一步處理的問(wèn)題,研究開(kāi)發(fā)了可丟手滑塊撈矛。
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