1. The weldability of D6AC ultra high strength steel is analyzed, and the fundamental of tandem sequence submerged arc welding with thin wire is introduced. 分析了D6AC超高强钢的焊接性，采用细丝双弧焊接方法，进行D6AC超高强钢的双弧焊接工艺试验研究。
2. Most goals begin with a desire that springs from a dream: a vision of how you could be, how things could be, or how you could be in tandem with things in your life. 大多数目标都起源于一个渴望，更深的说是一个梦想：你会怎么样，事情会怎么样，或是你会如何处理你生活中那些和你千丝万缕的事情。
3. Economic policy is unlikely to change much anywhere after the election season is over, though Poland may find it easier to speed reforms if the president and prime minister can work in tandem. 选举季节结束后任何地区的经济政策都不太可能改变太多，尽管波兰可能会发现如果总统和首相能够合作加速改革会更加容易一些。
英英解释
n.
1. an arrangement of two or more objects or persons one behind another
2. a bicycle with two sets of pedals and two seats adv.
1. one behind the other
网络释义
tandem 串联的;
串联;
双轮双座自行车;
中级漂白亚麻平布;
tandem bicycle 双座自行车;
协力车;
双人自行车;
协力自行车;
tandem enzyme 串联酶[同一多肽具有不同的酶活性;
串联酶;
释义：串联酶[同一多肽具有不同的酶活性;
串联 [同一多 具有不同的 活性;
