to avoid tragic cockpit slipups, military air-traffic controls frequently prohibit airline crews from trying to land in unusually windy or extremely poor visibility conditions.
but measurements made by the bbc suggest a strong correlation between the city「s poor visibility in recent days and high levels of airborne-particulate matter that can cause respiratory problems.
但bbc测定认为这与近日来北京的低可见度和高浓度的空气微粒关系极大,后者会引起呼吸问题。
for the poor visibility of the navigational satellites and the low power of the signal, the paper proposes a new way to improve the geo」s acquisitive performance and validates the method in theory.
the northeastern port city of tianjin closed all but one of the highways in and out of the city because of poor visibility on the weekend.
上周末,由于能见度过低,华北港口城市天津封闭了几乎所有进出该市的公路(仅保留一条)。
because of poor visibility caused by low cloud cover, it was decided that the bombers would delay the release of bombs 30 seconds to avoid hitting the assaulting troops.
低空密密的云层致使能见度极差,于是决定轰炸机延迟30秒钟投弹,以避免误伤进攻部队。
weather stations in several cities on the north china plain reported blowing sand and poor visibility in the hours it took the storm to pass.
华北平原多个城市的气象站报道沙尘经过的几个小时间风沙肆虐,可见度很低。
after relieving troops near bastogne, the 80th infantry, 317 reg., a company moved into the hurtgen forest area as rain, fog and poor visibility hampered movements in the freezing weather conditions.
currently, the delle alpi holds 67,229 spectators but is widely criticised for its poor visibility and lack of atmosphere – a problem which is mainly attributed to the running track.