The initial diagram provides for three primary classes.

原始图规定了三个基本类。

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Increase in primary classes and two classes in all the pieces and start content, but focus is different.

在初级班和提高班两册中都有残局和开局内容，但侧重点不一样。

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There are two primary classes in the Boost MPI library that you must learn: the environment class and the communicator class.

您必须了解 Boost MPI 库中的两个主要类：environment 类和 communicator 类。

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Two-thirds of the 1, 200 primary classes slated for closure because of dwindling numbers of pupils are to stay open.

ECONOMIST: France��s curious new smile

Although participation is increasing at secondary level, the report finds that only 54 percent of secondary school-age youth are enrolled, leaving an estimated 20 million "out-of-school" or still in primary classes.

UNESCO: HIGH DROP OUT AND REPETITION RATES SHOW QUALITY TO BE A CONCERN IN LATIN AMERICAN EDUCATION SYSTEMS

They also decided to set up two primary reception classes at the former St Ursula's from September.

BBC: Bristol free school set to open