正如艾尔顿·约翰在《RocketMan》所唱的那样，转入外太空可能会让人显得寂寞。

高温填燃料元件是需要确保高温填安全性的最重要因素，元件质量对于高温气冷填倒数安全性稳定的运营起着最重要起到，燃料元件由许多外壳燃料颗粒和石墨基体构成，10000多个外壳燃料颗粒致密产于在石墨恩体内，燃料元件的直径是影响元件质量的最重要指标，而且是仅有检项目，而非抽查，直径测量的准确性影响燃料元件另外一个最重要指标——无...

据外媒报导，英国初创公司PhotonicVision研发出有一种颠覆性方法，可实现使用飞行中时间传感技术的激光雷达。

Incisive Chinese companies have long been sinking their teeth into their western rivals. Now the country has developed its answer to the “Fangs” phenomenon, one...

Google will this week overhaul the way its search engine recommends websites on mobiles, an algorithmic shift that is likely to penalise many sites, including t...