Pettit

Astronauts normally drink from pouches using straws, to prevent liquids from spilling out in weightlessness, but Pettit wanted to show that they could sip from cups.

为了防止液体在失重的环境下溅出，宇航员通常只能用吸管吮吸装在袋中的饮料，但有了佩提特的这个新发明，宇航员们从此可以用杯子喝水了。

This paper illustrates a case study of some gas well in Pettit Formation, a first example applying this technology. In addition, it introduces the theory, equipments and basic operation procedure.

文中以第一个使用加热井筒工艺的迦太基油田的Pettit组某井为例子，介绍了此种工艺的原理、设备和现场施工基本过程。

Republican freedom is different from the negative freedom and positive freedom that elucidated by Berlin, but a third freedom, which Pettit alleged the freedom as non-domination.

共和主义所欲求的自由，不同于柏林所阐发的消极自由和积极自由，而是第三种自由，即佩迪特宣称的无支配自由。