“specified standards”简单造句，specified standards造句子

For the first time they were required to attain air quality of specified standards, within a specified period of time.

Article 19: Building of dam, sluice gate, bridge, wharf and other structures blocking, crossing or bordering a river channel; laying pipelines or cables across a river, must comply with State-specified standards for flood control and navigation as well as other related technical requirements.

However, this demand for better interoperability in the wake of increasingly frequent multinational operations hinders the establishment of specified standards.