……………………………………… (1)

In type: Q— is constant aeriform discharge, pa•m^{3}/ S; The cubage of V— standard container, M^{3}; The pressure of the gas in P— standard container, pa; T— measures time, s; C— waits for the element that measures alveolus to shed conductance, M^{3}/ S.

Seek solution (1) type gets (2) type:

………………………… (2)

In type: The pressure in container of P1—t1 hour standard, pa; P2—t_{2}The pressure in hour standard container, pa. By (2) type can be gotten, differ T when time_{2}- T_{1}Hasten is bordering on when ∞ is big, have:

…………………………………… (3)

That is to say the pressure in standard container lets time lengthen hasten to be bordering on one certain value, balance pressure to be worth P namely_{0}, have

……………………………………… (4)

Will (4) type takes the place of (2) type can get:

………………………… (5)

&nb

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