mid-chord line 弦中心线
mid-chord point 翼弦中点
mid-chord pitching moment 绕翼弦中点的俯仰力矩
downwash at mid-chord 翼弦中点的下洗
mid-chord pitching-moment derivative 翼弦中点俯仰力矩导数
Concrete was poured in separately from mid-span of arch slab to the supports and then from the supports to the top chord of the arch chord so as to balance the pouring load.
分两组由拱板下弦跨中同时向拱板支座浇筑混凝土，然后从拱板支座连续沿拱板上弦向中间合龙，使浇筑荷载相对均衡。
Experimental investigation of the turbine blade local heat transfer characteristics at the inner side of the mid-chord region near film holes was conducted, with and without impingement cooling.
对叶片弦中区内部有、无冲击射流的气膜出流冷却方式中，冷气侧气膜孔局部换热特性进行了实验研究。
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