boat lead and line  救生艇用测深锤

boat’boat’bob weight  铅锤

lead lead method  铅铅法年龄测定

lead-lead age  铅同位素年龄

red lead lead tetroxide  四氧化三铅

Lead(IV) oxide (Lead Dioxide， Lead Peroxide)  铅的氧化物

boat boom [= boat spar]  软垫杆; 系艇杆

steam boat ratchet =steam boat rachet  花篮螺丝

lead and lead-4% antimony alloy  Ph和Pb-4%Sb合金

lead and lead-antimony alloy  铅与铅锑合金

Lead and lead-free mixed assembly technics  有铅和无铅混装工艺

lead-acid batteries with lead-alloy fiber mesh grid  铅布蓄电池

lead-fiber wound lead-acid battery  铅布卷绕铅蓄电池

Lead-saving technology for lead-acid batteries  铅酸蓄电池节铅技术

line of lead-in and lead-out  引入引出线

“Dragon Boat”live fish  龙舟活鱼

2008 Olympic boat-sailing field  奥运帆船赛场

a boat  船

accident boat  应急救生艇; 应急艇; 救生艇