orifice spillway孔口: porthole; ostiole; orifices溢洪道: spillway凹口溢洪道: saddle spillway孔口式溢洪道: orifice spillway溢洪道: [水文] spillway◇溢洪道护坦 spillway apron下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:孔口溢洪道，即可在微信中查询翻译
