“弓状”的拼音？

雨后彩虹在天上形成弓状.A bright rainbow arched above after the rain.弓状前缘的: 具有外凸曲线形前缘的.Bowfront: Having an outward - curving front.显微镜下将脑膜抬起,暴露出岩浅大神经 、 面神经裂孔和弓状隆起.Lift the cerebral dura mater to exposure greater superficial petrosal...

“弓状”的英语可以翻译为：arciform，arcuate ...