The second crack is a crack originating at the groove weld toe of the column flange-girder flange connection.
第二种是产生于立柱翼缘与主梁翼缘连接处的坡口焊缝焊趾处的裂纹。
The beginning of second crack is an indicator that the coffee is nearly done and you should be ready to end the roast very soon.
二爆的开始是咖啡豆接近烘焙好的指标，并且需要尽快关火结束。
Second crack can be a little more difficult to hear as these sounds are lower in volume, but once you learn to distinguish the sound it is unmistakable.
二爆的声音有点难听到，因为这些声音更低沉，但是一旦你学会了分辨就不会混淆。
Second crack can be a little more difficult to hear as these sounds are lower in volume, but once you learn to distinguish the sound it is unmistakable.
二爆的声音有点难听到，因为这些声音更低沉，但是一旦你学会了分辨就不会混淆。
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