例句與造句

1. Aiming at the great challenge of deepwater oil resource exploitation in 21st century china , this paper firstly explained contents of offshore engineering joining technology , then introduced a series of important technologies such as deepwater pipeline laying welding , local dry welding , underwater hyperbaric welding , and friction stir welding , lastly put forward countermeasures to develop offshore engineering joining technology in china
   摘要在解釋海洋工程連接技術(shù)內(nèi)涵的基礎(chǔ)之上，針對(duì)21世紀(jì)我國(guó)海洋石油開(kāi)發(fā)深水資源的巨大挑戰(zhàn)，對(duì)深水海底管道鋪設(shè)焊接、局部干式焊接、水下干式高壓焊接以后摩擦疊焊等重要技術(shù)進(jìn)行了介紹，最后提出了發(fā)展我國(guó)海洋工程連接技術(shù)的對(duì)策。
2. It's difficult to find hyperbaric welding in a sentence. 用hyperbaric welding造句挺難的