This edition of BS 5099 introduces a clause on calibration frequency, together with an associated annex on the procedure for checking the efficacy of the method of spark testing.
此版本的BS 5099在附件里增添了火花试机的校准周期以及校准的方法和程序。
This edition of BS 5099 introduces a clause on calibration frequency, together with an associated annex on the procedure for checking the efficacy of the method of spark testing.
此版本的BS 5099在附件里增添了火花试机的校准周期以及校准的方法和程序。
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