121.防雹弹(暴、爆)防冰雹用的一种炮弹,又叫“防雹增雨弹”。弹内装有碘化银,当炮弹打到云层炸开后,施放出的碘化银会自动燃烧播散开来。碘化银具有与气、液体快速结合的化学特性,使云层中形成大量水滴或微小的冰粒落至地面,有效防止冰雹对农作物造成的危害。(有“防暴”一词,但无“防暴弹”“防爆弹”。一般炸弹也不能“防爆”。)122.括约肌(扩;缩)肛门、尿道口、膀胱口、幽门、贲门等处的环状肌肉。具有收缩和舒张的功能,收缩时使肛门、尿道、膀胱、幽门、贲门等口关闭,舒张时使它们开放。(括:扎,束。约:缠束,环束。)123.考古发掘(挖)考古学术语。指通过考古调查、勘探、挖掘等手段,使埋藏的具有历史、艺术和科学价值的古文化遗址、古墓葬、古建筑、石窟寺和石刻、壁画等呈现于世:~工作︱~计划︱~的文物应按照国家有关规定移交给 121. Anti-hail bombs (violence, explosion) A bullet used to prevent hail, also known as “anti-hail rainstorm”. Bomb with silver iodide, when the shells hit the clouds exploded, the release of silver iodide will automatically spread by burning. Silver iodide has the chemical characteristics of quick combination with gas and liquid, which causes large amounts of water droplets or tiny ice particles in clouds to fall to the ground, thus effectively preventing the hail from harming crops. (There is “the word” riot “, but no ” anti-riot “” bomb “.More bombs can not ” sirolimus ") 122. Sphincter Mouth, pylorus, cardia, etc. at the ring muscle. With the contraction and relaxation of the function, contraction of the anus, urethra, bladder, pyloric, cardia and other mouth closed, make them open when diastolic. (Including: tie, beam. About: wrapped around the beam, ring.) 123. Archaeological excavation (digging) archaeological terms. Refers to the burial of ancient cultural sites, ancient tombs, ancient buildings, cave temples, stone carvings and murals with historical, artistic and scientific values ​​through the means of archeological surveys, exploration and excavation: ~ Work︱ ~ Plans︱ ~ Cultural relics should be transferred to the relevant provisions of the state