Choosing which to use is a matter of design, trial-and-error, and personal preference.
选择哪一些是设计、反复试验和个人偏好的问题。
The optimum recipe of yolk powder and sodium nitrite was determined by single factor trial and preference method.
通过单因素试验和优选试验法，得出蛋黄粉和亚硝酸钠的最佳配比。
The optimum recipe of yolk powder and sodium nitrite was determined by single factor trial and preference method.
通过单因素试验和优选试验法，得出蛋黄粉和亚硝酸钠的最佳配比。
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