箱體由(you)(you)堅固(gu)的銅板(ban)(ban)制(zhi)成(cheng),抓取(qu)面積為225 cm2。采(cai)泥器箱體底(di)部(bu)由(you)(you)兩個彈(dan)簧制(zhi)動的齒板(ban)(ban)構成(cheng),其閉(bi)合由(you)(you)報信器控制(zhi)。箱體頂(ding)部(bu)由(you)(you)兩塊(kuai)板(ban)(ban)子蓋(gai)住(zhu),防止取(qu)出(chu)采(cai)泥器時底(di)泥從采(cai)泥器頂(ding)部(bu)漏出(chu)。 |