Then the direct and indirect effect of each main parameter selected on the formation of yield were determined with path analysis.

通过对三个主因子通径分析，明确其对产量构成的直接和间接效应。

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Then, the direct and indirect effects of each main parameter selected on the formation of the yield were determined with path analysis.

再对入选的各个主要性状进行通径分析，明确其对产量构成的直接和间接效应。

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The parameter selected, channel, tube system and shell design scheme, design trait and design point of 330 MW high pressure heater were introduced.

介绍了330 MW机组高压加热器的参数选取、水室、管系及外壳的设计方案、设计特点及要点。

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