Pressure gauge must be appraised and calibrated before usage.

仪表在使用之前，必须检定和校准。

youdao

IS it necessary to wash the Platinum ELISA plates before usage?

铂金版elisa试剂盒使用前有必要洗涤酶标板吗？

youdao

To help cooling down yourself in the hot summer, keep the soap refrigerated before usage;

夏天置于冰箱内冰镇后使用，其收敛、洁净、爽润效果会让你对它爱不释手！

youdao

The antiquity of a law alone is no justification for its usage. Aristotle seems to reject you might say Burkean conservatism long before the time.

法律的古老性不能作为其用法的借口,亚里士多德似乎事先拒绝,你可能会说柏克式的保守主义,古老与传统并不能。

耶鲁公开课 - 政治哲学导论课程节选

The witness said she had looked at mobile phones usage an hour before and one hour after the bomb exploded in the main street.

BBC: Omagh bomb scene

He has sounded this warning before but says the chances rise with usage.

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He says they are seeing spectrum usage like they have never seen before, mostly driven by data.

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