501 船[体分]段代码 block code

502 方块系数,方 block coefficient (or block coefficient of fineness)

503 滑车连接法 block connection

504 船段分割计划 block division planning

505 阻隔电容器,格直流电容器 blocking condenser

506 间歇振荡器(电) blocking oscillator

507 船段检查 block inspection

508 矩方头桅 block mast

509 板材量法 block measure

510 船模 block model

511 分段建造法 block system

512 构件焊接顺序 block welding sequence

513 中块 bloom

514 中块轧机 blooming mill

515 1)逆火 2)逆吹 blow-back

516 漏气 blow-by (or blow-bye)

517 冲放,放水 blow down

518 动压过给 blowdown turbo charging system

519 鼓风机 blower

520 气孔 blow hole (or gas pocket)

521 喷灯 blow lamp

522 吹泄 blow off

523 吹泄旋塞 blow-off cock

524 吹泄管 blow off pipe

525 吹泄阀 blow-off (or blowout, or bleeder) valve

526 防喷泄气阀(钻油台) blowout preventer (BOP)

527 吹管 blow pipe

528 蓝热 blue heat

529 出港旗 Blue Peter

530 蓝图 blue print