Pressure class 压力级 ; 压力等级 ; 压力级别 ; 公称压力
the first class pressure vessel 一类压力容器
class 1 pressure 一级压力
working pressure class 工作压力等级
lock-up pressure class 关闭压力等级
Accuracy class of pressure gauge 压力表量程
class of lock-up pressure zone 关闭压力区等级
The company was founded in 1988, is the national A-boiler and a second class pressure vessels of large manufacturing companies.
我公司成立于1988年,是国家A级锅炉和一、二类压力容器大型制造企业。
"What white middle-class parents do not always understand," she said, "is how much pressure recent immigrants feel to boost their children into the middle class."
她说:“来自中产阶级的白人父母们总是不理解,新移民为了让自己的孩子跻身中产阶级要承担多大的压力。”
He was also afraid he'd be useless as a coach, caving under the pressure and forgetting all we'd learned in our childbirth class.
他还担心自己无法完成指导的任务,在压力作用下忘记我们在分娩课上学过的一切。
So you can imagine that adds real excitement and energy to the class and puts a little bit pressure on the professors to make sure that we have something worth coming half way around the world for.
可以想象,为课堂带去的兴奋和活力,也给教授施加了压力,我们要确保,能传授值得绕半个地球赶来学习的知识。
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