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follows:
1. The Consultative Committee for Electricity (CCE),
set up in 1927.
2. The Consultative Committee for Photometry and
Radiometry (CCPR), which is the new name given in
1971 to the Consultative Committee for Photometry
set up in 1933 (between 1930 and 1933 the preceding
committee (CCE) dealt with matters concerning
photometry).
3. The Consultative Committee for Thermometry
(CCT), set up in 1937.
4. The Consultative Committee for the Definition of the
Metre (CCDM), set up in 1952.
5. The Consultative Committee for the Definition of the
Second (CCDS), set up in 1956.
6. The Consultative Committee for the Standards of
Measurement of Ionizing Radiations (CCEMRI), set
up in 1958. Since 1969 this Consultative Committee
has consisted of four sections: Section I (measurement
of X- and y-rays); Section 11 (measurement of
radionuclides); Section 111 (neutron measurements);
Section IV (a-energy standards).
7. The Consultative Committee for Units (CCU), set up
in 1964.
The proceedings of the General Conference, the
International Committee. the Consultative Committees and
the International Bureau are published under the auspices of
the latter in the following series:
- Comptes rendus des shances de la C'ot1fkrenc.e Gknkrale
des Poids et Mesures;
- Proc2s- Verba~rxd es siances d1r Comite Irlt~rt~atiorla(Iel s
Poids et Mesures;
- Sessions des Comites Consultcrt~fs;
- Recueil de Travaux du Bureau International des Poids et
Mesures (this compilation brings together articles
published in scientific and technical journals and
books, as well as certain work published in the form of
duplicated reports).
2.6 From time to time BlPM publishes a report on
the development of the metric system throughout the world,
entitled Les recents progres du Systhme Mitriqlre. The
collection of the Travaux et Memoires du Burearr Interna/ional
des Poids et Mesures (22 volumes published between 1881
and 1966) ceased in 1966 by a decision of the CIPM. Since
1965 the international journal Metrologia, edited under the
auspices of CIPM, has published articles on the more
important work on scientific metrology carried out
throughout the world, on the improvement in measuring
methods and standards, of units, etc, as well as reports
concerning the activities, decisions and recommendations of
the various bodies created under the Metre Convention.
3.--International Organization for Standardisation
The International Organization for Standardization (1.50)
is a world-wide federation of national standards institutes
which, although not a part of the BIPM, provides
recommendations for the use of SI and certain other units.
IS0 Document 1000 and the IS0 Recommendation R31
series of documents provide extensive detail on the
application of the SI units. ICAO maintains liaison with IS0
regarding the standardized application of SI units in aviation.
ATTACHMENT B.-GUIDANCE ON THE APPLICATION OF THE SI
1.-Introduction 1.3 The supplementary units of the SI are listed in
Table B-2 and may be regarded either as base units or as
1.1 The International System of Units is a derivedunits.
complete, coherent system which includes three classes of
units:
a) base units; Table B-2. -S1 supplementary units
b) supplementary units; and
c) derived units.
Quantity Unit Symbol
1.2 The S1 is based on seven units which are plane angle
dimensionally independent and are listed in Table B-I.
solid angle
Table B-I. -S1 base units
radian rad
steradian sr
Quantity Unit Symbol 1.4 Derived units of the SI are formed by
combining base units, supplementary units and other
derived units according to the algebraic relations linking the
amount of a substance mole mol corresponding quantities. The symbols for derived units are
electric current ampere A obtained by means of the mathematical signs for
multiplication, division and the use of exponents. Those
length metre m derived SI units which have special names and symbols are
luminous intensity candela cd listed in Table B-3.
mass kilogram kg
thermodynamic temperature kelvin K Note. -The specific application of the derived units listed in
time second s oTpaebrlaet i8on-3s aisn gdi voethne rin u nTiatsb cleo m3-m4.o n to international civil aviation
Table B - 3 . 4 1 derived units with special names
Quantity Unit Symbol Derivation
absorbed dose (radiation)
activity of radionuclides
capacitance
conductance
electric potential, potential difference, electromotive force
electric resistance
energy, work, quantity of heat
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附件5--空中和地面运行中所使用的计量单位(25)