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正弧 [zhèng hú]
[数] positive arc
- 我意思是弧长可正可负。
I mean, arc length could be positive or negative. - 两者并非独立事件，我们担忧其构成相互促进的正反馈弧。
The two events are not independent and could form a reflex arc, probably of strong positive feedback. - 三种骨水泥（PMMA，两种磷酸钙水泥）和一种硅派生物被进行压缩和循环正弧力学检测。
Three types of bone cement (PMMA, 2 different calcium phosphate cements) and one silicon derivative were assessed during compressive and cyclic sinusoidal testing.
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