查询词典 on guard

catch sb. off his guard：乘某人不备; 使人措手不及

catch sb. off guard 乘某人不备 使人措手不及 | catch sb. off his guard 乘某人不备 使人措手不及 | come off guard [军]离防 下防

They kept a close guard over the thieves：他们对小偷们严加看管

keep guard 守望,警戒 | They kept a close guard over the thieves. 他们对小偷们严加看管. | stand guard 站岗,放哨

coast guard：海防哨兵

coast guard 海岸警卫队美国海岸警卫队 | coast guard 海防哨兵 | Coast Guard 美国海岸警卫队

coast guard ship：海岸护卫船

Coast Guard patrol cutter 海岸警卫队巡逻快艇 | coast guard ship 海岸护卫船 | coast guard ship 海岸护卫船海上警卫艇

coast guard ship：海岸护卫船海上警卫艇

coast guard ship 海岸护卫船 | coast guard ship 海岸护卫船海上警卫艇 | Coast Guard Station USA 美国海岸警卫队站

coast guard station：边防站

Coast Guard Station USA 美国海岸警卫队站 | coast guard station 边防站 | Coast Guard 海岸警卫队

Guard rail for derailed wheel：安全護軌

4613 Guard Rail 護軌 | 4614 Guard rail for derailed wheel 安全護軌 | 4615 Guard rail for railroad crossing 平交道護軌

safe-guard door chain：防盗门链

safe-guard chain door lock 防盗门锁 | safe-guard door chain 防盗门链 | safe-guard glasses 防护眼镜

drop one's guard：丧失警惕

lower one's guard 丧失警惕 | drop one's guard 丧失警惕 | get past sb.'s guard 冲破某人的防御(指拳击 击剑等)

dust guard：除尘设备防尘板

dust guard 除尘设备 | dust guard 除尘设备防尘板 | dust guard 防尘板

liquid helium：液态氦

除了路径积分及应用在量子电动力学的研究成果之外,费曼其它重要的研究贡献还有1953年发表有关液态氦(liquid helium)超流体理论,以及1969年提出的成子(parton)模型.

fly wheel nut wrench：装拆飞轮螺母扳手

fly wheel magneto 飞轮式永磁发动机 | fly wheel nut wrench 装拆飞轮螺母扳手 | fly wheel pump 飞轮泵