In calibrating the leak, the pressure in the ballast chamber can be precisely controlled in such a way that the standard gas flow through the orifice is close or equal to the leak rate.
在漏孔校准过程中，通过调节稳压室中的压力，很容易使标准气体流量与漏孔漏率非常接近或相等，从而避免四极质谱计的非线性影响。
Through the leak-rate comparison with PTB using standard leak, the reliability of uncertainty evaluation results has been verified.
通过传递标准漏孔与德国PT B开展了漏率比对，验证了测量不确定度评估结果的可靠性。
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