1. 内焰：inner iodine value 内碘值 | inner flame 内焰 | inner filtration effect 内部滤光效应
2. 内层焰：内侧地震带 inner earthquake zone | 内层焰 inner flame | 内铰合板 inner hinge plate
1. Experts later confirmed the inner cowl of the engine was ablaze, but there was no open flame after the engines were shut down.