...tritium, a radioactive isotope of hydrogen.氢的放射性同位素氚Tritium has a half - life of 12.4 years.氚的半衰期为12.4年,地球形成时的氚早已不存在.The Energy Secretary hopes to bring on line a safer new tritium production reactor...能源大臣希望能投产一座更安全的...
Tritium is one of the mildest radioactive isotopes.氚是最和缓的放射性同位素之一.More reactive are the heavier isotopes of hydrogen, deuterium and tritium.更为活跃的是氢的较重同位素, 氘和氚.Tritium has a half - life of 12.4 years.氚的半衰期为12.4年,地球形成时的氚早已...
In male company, perhaps he did overstep the bounds of propriety.在清一色男性的公司里，可能他的举止确实有失得体。Parents fear they might overstep these invisible boundaries.父母担心他们可能会逾越这些无形的界限。to overstep your authority越权...
水平面有时也称为横断(切)面.The horizontal plane sometimes is referred to as the transverse plane.长虹般的大桥,直插云霄,横断了长江.The bridge like rainbow penetrating into the clouds has transected the River.结论三维重建对腰椎间盘突出症有重要的诊断价值,可提供平片和横断位不易得到的解剖学...
Do we need it now that we have fallback group here?你必须登录后才能回复想现在登录吗?Yesterday's vote itself was a retreat from an earlier fallback position.昨天的投票本身就是放弃先前所留退路的做法。Yesterday'svote itself was a retreat from an earl...
Mechanical Jacks System : Four - beamtwo - pillar frame, main cylinder, pneumatic components, two - way and straight - line guider, hydraulic - driving system - feeding systematic.液气传动部: 四梁二柱拉杆式封闭框架机体结构 、 油缸 、 气动元件 、 双向 ...
Norma is said to dislike the glare of publicity.据说诺尔玛不喜欢被人过多关注。She attacked police in the full glare of TV cameras.她在电视摄像机的镜头聚焦下公然袭击了警察。He turned his baleful glare on the cowering suspect.他恶毒地盯着那个蜷缩成一团的嫌疑犯....