He said that this is not sporadic small bubble.
他说,这不是零星的小气泡。
You can touch it with your hand. The inside sole should be soft, with clear trademark, no small bubble.
内底用手摸要柔软,有一定弹性印刷的商标要清晰,再看各橡胶粘合部位,看看是否有出现小胶点、气泡。
However, as a small bubble, the density of plastic is still high, bending wire power cables can maintain the center.
不过由于气泡很小,塑料的密度仍然很高,在弯曲电缆时能使导线保持在中心。
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