主要讨论了钼-铌合金原料品质，包括烧结条的制备、原料的化学成分、原料棒的尺寸规格等对单晶制备的影响。

Influence of feedstock qualities of Mo-Nb alloy, including its preparation of sintering billet, chemical composition and specifications, on processing single crystal is discussed in detail.

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每一种原料都有自己的化学成分和味道。

Those ingredients each have their own chemicals and their own flavors.

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原料、给料：作为原料，利用其化学成分，以生产终端产品的物质(如煤气)。

Feedstock: Substance (e. g. gas) used as raw material for its chemical properties in creating an end product.

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