black absorber rod黑吸收棒
black control rod黑控制棒
black and white rod pattern黑白棒型
black-type control rod黑体式控制棒
rod black control黑体控制棒
N（名词） (in Britain) an officer of the House of Lords and of the Order of the Garter, whose main duty is summoning the Commons at the opening and proroguing of Parliament (英国)黑杖侍卫; 上议院和嘉德勋爵士团的官吏，主要职责是在议会开始和休会时召唤下议院议员