The performance and hysteresis of boiling heat transfer of T-tube with different opening, low fin tube, and two kind of plain tubes have been studied experimentally.
本文报道了几种不同平均开口度的T管、低肋管和光管的沸腾传热性能及沸腾滞后现象。
However, at first only plain chocolate (a kind of chocolate without milk and with very little sugar) was produced.
但是，一开始仅生产不添加牛奶，少糖的原味巧克力。
Rice cakes can come plain — which are kind of bland — or in caramel, apple-cinnamon, cheese-flavored, and various other varieties.
米糕可以做成原味的——一种无味的——或焦糖味、苹果派肉桂味、奶酪味，以及其他各种口味。
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