Any of a series of chemically similar, radioactive elements with atomic numbers ranging from 89 ( actinium ) through 103 ( lawrencium ).锕类任何化学性质相似, 原子序数在89 ( 锕 ) 与103 ( 铹 ) 之间变化的放射性元素....
我儿子遭受了巨大痛苦，他失去了最要好的朋友。My son has suffered terribly. He has lost his best friend.她向她最要好的朋友倾吐了自己所有的秘密。She confided all her secrets to her best friend.他们从上学时期以来就是最要好的朋友。They've been best mates since school....
There it raises its large curves still, eclipsing the hills.它依然拱起它那庞大的圆弧, 遮挡了山峰.Eclipsing Z - scan ( EZ - scan ) and reflection Z - scan ( RZ - scan ), and analyses the characters and applications of these techniques.分析了...
I received two slaps on the face myself.我自己脸上挨了两次刮.KRAMER : [ slaps George on the arm ] You keep me posted!克雷默: 那你得经常告诉我消息!White older boy: ( Slaps his brother again ) Shut up!白人大男孩: ( 给了他弟弟一巴掌 ) 嘴!...
含碳的铌合金,若在高温下受氧沾污,易产生脱碳现象.In niobium alloy containing carbon occurs decarburization in case of contamination by oxygen at higher temperature.含%碳的钢(铁碳混合物的低共熔点),含%碳的碳钢是纯珠光体.A mixture of ferrite cementite forming distinct la...