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- Time and frequency primary standard 時(shí)間與頻率基準
- Check the solution against a primary standard. 對照原來(lái)的標準液來(lái)檢驗此溶液。
- Study on extending measurement range of viscosity primary standard. 擴大粘度基準量程的研究。
- A new automated spectro radiometric calibration system is used to establish the new national primary standard of color temperature. 用一個(gè)自動(dòng)的光譜輻射校準系統建立新的國家色溫度基準。
- This paper briefly describes the principle, structure and performances of the national primary standard manometer built at the NIM in 1986. 本文概要介紹中國計量科學(xué)研究院于1986年建立的國家氣壓基準器的原理、結構和性能。
- System of Primary Standard for Vibration at Low Frequency 低頻水平向振動(dòng)基準裝置
- Quality of entire county environment is good, atmosphere stability is in primary standard, pollution is little, have the favorable environment that produces green food and requirement. 全縣環(huán)境質(zhì)量良好,大氣穩定在一級標準,污染少,具備生產(chǎn)綠色食品的良好環(huán)境和條件。
- All date issued are traceable to National and International Primary Standards of verification. 本中心所出具的數據均可溯源到國際和國家計量基準。
- System of Primary Standard for Horizontal Vibration at Low Frequency 低頻垂直向振動(dòng)基準裝置
- For some research purposes and possibly for referee work, analyzed primary standards may be obtained from the U.S. Bureau of Standards. 對于某些研究工作和仲裁工作，可以從美國標準局獲得經(jīng)過(guò)分析的一級標準物。
- High frequency vibration primary standard for the magnitude and phase 高頻振動(dòng)幅值和相位基準
- Primary standard for Brinell hardness standard 布氏硬度基準裝置
- He varied the transmission frequency. 他變換了無(wú)線(xiàn)電傳送的頻率。
- Primary standard for mid-frequency vibration 中頻振動(dòng)基準裝置
- Primary standard for plastic Rockwell hardness 塑料洛氏硬度基準裝置
- A unit of frequency equal to one cycle per second. 赫茲頻率的單位，等于每秒一周
- primary standard for magnetic unit 磁學(xué)量單位基準器
- primary standard of magnetic field strength 磁場(chǎng)強度基準器
- Fatal accidents have decreased in frequency over recent years. 近年來(lái)死亡事故發(fā)生的頻率已經(jīng)下降。
- universal primary standard substance 通用基準物
