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- Supposing the area of fishpond is 1000m2 and 0.8m deep, the volume of aeration tank and sedimentation tank, time of aeration, quantity of atmosphere needed, quantity of increased sludge were caculated. 取封闭式循环水鱼类养殖水面1000mZ，水深按0.;8m，进水BODS浓度So设为55m留L，出水BODS浓度Se为4m妙的设计计算了曝气池容积、曝气时间、曝气所需空气量、污泥增长量及二次沉淀池容积。
- It was a time of great tribulation. 那是一段充满苦难的时期。
- Religion was her crutch in times of sorrow. 宗教是她忧伤时依赖的支柱。
- We led a hard life in times of stress. 在困难时期我们过着艰苦的生活。
- Have you made sure of the time of the train? 火车开车时间你搞清楚了吗？
- It's so changeable at this time of year. 这段时间天气变化无常。
- I'll make sure of the time of the flight. 我要核实一下这班飞机的时间。
- She stopped by just to pass the time of day. 她来串门只是为了打发时间。
- He will never fall away even in time of danger. 他即使在危急时刻也绝不会放弃原则。
- Food shortage often occur in times of war. 战争期间常发生粮食短缺现象。
- His generosity manifests itself in times of need. 他的慷慨在困境中表现了出来。
- Water is short at this time of year. 每年这个时候缺水。
- He played the man in the time of great trouble. 他在极为困难的时候显示出男子汉的气概。
- Do the time of the execution of the work suit you? 贵方觉得工程完成期限定得合适吗？
- Have you made certain of the time of the train? 火车开车时间你搞清楚了吗？
- Now come the question of time of shipment. 接下来是装运时间问题。
- National unity is essential in time of war. 举国团结在战时是非常重要的。
- We always hold together in times of crisis. 我们在危难中总是团结一致。
- A faithful friend helps in times of trouble. 一个忠实的朋友在困难时刻会帮助你。
- A horoscope for the time of one's birth. 算命天宫图人出生时间的天宫画
