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单词 nanovoltmeter
释义

nanovoltmetern.

Brit. /ˌnanə(ʊ)ˈvəʊltˌmiːtə/, /ˌnanə(ʊ)ˈvɒltˌmiːtə/, U.S. /ˌnænoʊˈvoʊltˌmidər/
Origin: Formed within English, by compounding. Etymons: nano- comb. form, voltmeter n.
Etymology: < nano- comb. form + voltmeter n. Compare slightly later nanovolt n.
A voltmeter able to measure voltages of the order of nanovolts.
ΚΠ
1962 Science 16 Mar. 950/3 Nanovoltmeter (above) has 13 full-scale d-c ranges from ±0.1 pv to ±100 mv.
1967 Electronics 6 Mar. 80/2 (advt.) It's an honest nanovoltmeter whose high sensitivity and complete guarding also simplify measurements in the microvolt area.
1979 Instrumental & Exper. Techniques 21 1671 The IBS-1 dc nanovoltmeter is intended for the measurement of dc or slowly varying voltages in the rang from 5.10−9 to 30 V.
1999 IEEE Trans. Instrumentation & Measurem. 48 329/2 Voltage differences between the reference and the Zener under test are measured with a Keithley 182 or a Hewlett-Packard 34 420A nanovoltmeter.
This is a new entry (OED Third Edition, June 2003; most recently modified version published online March 2022).
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n.1962
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