The swirl ratio and flow coefficient can be obtained through the traditional steady flow test in diesel helical intake port.
对某柴油机螺旋进气道进行传统的气道稳流试验，得到了涡流比和流量系数。
The design of port is depended on steady flow test to obtain swirl ratio and flow coefficient and use them to evaluate the performance of intake port.
长期以来进气道的设计主要是依靠气道稳流试验测量其涡流比和流量系数来评定气道的性能。
The design of port is depended on steady flow test to obtain swirl ratio and flow coefficient and use them to evaluate the performance of intake port.
长期以来进气道的设计主要是依靠气道稳流试验测量其涡流比和流量系数来评定气道的性能。
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