Методическая разработка по английскому языку по специальности «Стандартизация, сертификация и метрология» - страница 14

5. The main standards are primary standards.

6. There is a five-level hierarchy of physical measurement standards.

7. Secondary reference standards are values of primary reference standards.

Ex. 4. Fill t he blanks using the following word words: to calibrate techniques constant, basis, national, types, reference, trend, measurement, replace,

There is a three … of physical measurement standards The main standards ar e p rimary standards. Primary standards allow realizing units of measurements. Historically, units of measure were defined using unique artifacts which were the legal … of units of measure. A continuing … in metrology is these artifact standards аnd … them with practical units of measure. These units will be connected with fundamental physical … They will be defined using standardized …

Secondary reference standards are very close approximations of рrimary … standards. For example, major national measuring laboratories such as the US's National Institute of Standards andTechnology (NIST) will hold a … standard kilogram, which is рeriodically … against the IPK. The third type of standard, a standard which is periodically calibrated against a secondary standard, is known as a working standard. Working standards are used for the calibration of commercial and industrial … equipment.

Ex. 5. Match the beginning with the endings based on the text

Ex. 6. Put the questions to the bold-typed words:

1. People use secondary standards to define approximate values.

2. Certified reference materials are used in commerce.

3. The loss of this artifact didn’t create any problems for us.

4. Electrical potential is very important for the production of cell batteries.

5. This working standard is used to calibrate measurement equipment.

Ex. 7. M ake the summary of the text «What is standard?» using the following plan:

The definition of a standard;

Types of standard;

The definitions of the primary standard;

The definition of the secondary standard;

The definition of the working standard;

The spheres of using these standards.

to confirm – подтверждать – растау, құптау, дәлелдеу

assigned value – приписанное значение – белгіленген мән

to assign a value – присваивать значение – мәнді меншіктеу

reproducible – воспроизводимый – елестететін, еске түсіретін