Use regulators and pressure relief devices when connecting cylinders to circuits having lower pressure service ratings.

当把钢瓶连接到较低额定工作压力的回路上时，要使用调整器和减压装置。

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Use regulators and pressure-relief devices when connecting cylinders to piping circuits with lower pressure service ratings.

在把钢瓶连接倒较低额定工作压力的管道回路时，使用调整器和减压装置。

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In the face of new competition, they are feeling pressure to maintain high service levels with current customers.

面对新的竞争，他们感觉到了为当前客户维持较高服务级别的压力。

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"With survey results like this you have to question why the government feels it is necessary to embark on such a radical and costly re-organisation of the NHS right now, particularly when you take into account the financial pressure the service is already under", a spokesperson said.

BBC: NHS satisfaction 'at record high'

The Yorkshire Ambulance Service has also urged people to take extra care to avoid extra pressure on the service.

BBC: Snow prompts West Yorkshire travel warning

However, Baghdatis remained under heavy pressure in every service game, saving two more break points in game three before Murray converted his 10th of the second set for a 3-2 lead.

BBC: Andy Murray beats Marcos Baghdatis at French Open