| 摘要 |
<p>The hollow body eg. a pipe 2 or accumulator tank 8 comprises a covering 3 made from a material which changes its optical appearance when in contact with the fluid which is conveyed in the hollow body and which exits in the event of a leakage. The covering 3 may carry a further transparent covering 4. The invention is applicable to pipework of a fuel-injection system for a diesel engine.</p> |
