现行

MIL MIL-C-49468/2 Notice 1-Cancellation

CRYSTAL UNITS, QUARTZ, PRECISION (NO S/S DOCUMENT)
水晶单位 QUARTZ PRECISION（无S/S文件）

1996-06-14

现行

KS B 5252(2022 Confirm)

정밀 수준기
精度等级

1995-11-08

现行

JIS B 7510-1993

Precision levels
精度等级

1993-01-01

现行

UNE 21354-1976

PRECISION SOUND LEVEL METERS.
精密声级计

1976-10-15

现行

CID A-A-50685

LEVEL, PRECISION MASTER, SINGLE FACE
水平仪 精密母版 单面

1989-07-08

现行

CID A-A-50685

LEVEL, PRECISION MASTER, SINGLE FACE
水平仪 精密母版 单面

1989-07-08

现行

BS 958-1968

Specification for spirit levels for use in precision engineering
精密工程用水准仪规范

1968-03-22

现行

DIN 18724

Geodetic instruments; precision of levels and theodolites from technical data
大地测量仪器；技术数据中水准仪和经纬仪的精度

1990-06-01

现行

SJ/T 10572-1994

RJ74型精密金属膜电阻器详细规范
Detail specification for electronic components--Fixed precision,Type RJ74 metal film precision resistors Assessment level E

1994-08-08

现行

SJ/T 10571-1994

RＪ73型精密金属膜电阻器详细规范
Detail specification for electronic components--Fixed precision resistors,Type RJ73 metal precision resistors Assessment level E

1994-08-08

现行

SJ/T 10574-1994

RJ76型精密金属膜电阻器详细规范
Detail specification for electronic components--Fixed precision resistors,Type RJ76 metal film precision resistors Assessment level E

1994-08-08

现行

SJ/T 10573-1994

RJ75型精密金属膜电阻器详细规范
Detail specification for electronic components--Fixed precision resistors,Type RJ75 metal film precision resistors Assessment level E

1994-08-08

现行

BS CECC 40301 001 TO 004-1977

Detail specification for fixed wirewound insulated precision resistors. Full assessment level
固定线绕绝缘精密电阻器详细规范 全面评估水平

1977-10-15

现行

MIL MIL-T-13057C

THERMOMETERS, SELF-INDICATING, LIQUID-IN-GLASS (FOR PRECISION LEVEL ROD) (NO S/S DOCUMENT)
自指示玻璃液位温度计（用于精密液位杆）（无S/S文件）

1981-08-04

现行

BS EN ISO 3741-2010

Acoustics. Determination of sound power levels and sound energy levels of noise sources using sound pressure. Precision methods for reverberation test rooms
声学利用声压测定噪声源的声功率级和声能级 混响试验室的精度方法

2010-10-31

现行

GB/T 6881-2023

声学 声压法测定噪声源声功率级和声能量级 混响室精密法
Acoustics—Determination of sound power levels and sound energy levels of noise sources using sound pressure—Precision methods for reverberation test rooms

2023-09-07

现行

KS I ISO 3741

음향 — 음압법에 의한 소음원의 음향파워 레벨과 음향에너지레벨 측정방법 —잔향실에서의 정밀 측정방법
声学.用声压测定噪声源的声功率级和声能级.混响试验室的精确方法

2022-09-13

现行

GOST R ISO 3741-2013

Акустика. Определение уровней звуковой мощности и звуковой энергии источников шума по звуковому давлению. Точные методы для реверберационных камер
声学 使用声压确定噪声源的声功率级和声能级 混响测试室的精密方法

现行

ISO 3741-2010

Acoustics — Determination of sound power levels and sound energy levels of noise sources using sound pressure — Precision methods for reverberation test rooms
声学——使用声压测定噪声源的声功率级和声能级——混响试验室的精度方法

2010-09-21

现行

AS 5336-2019

Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi - anechoic rooms
声学.用声压测定噪声源的声功率级和声能级.消声室和半消声室的精确方法

2019-05-08