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- The test result shows that greenhouse white fly can be controlled by continuously applying Encarsia formosa Gahan twice when the density of white fly in greenhouse is two plants have one pest. 试验就丽蚜小蜂的最佳释放时机、释放密度、黄板悬挂高度、黄板防治效果等四方面进行了研究。
- grape white fly (Trialeurodes vittata) 葡萄粉虱
- A patch of beautifully eroded clay; and yucca blossoms, so pure, so waxy, but lousy with creeping white flies. 一块被风蚀过的非常美丽的泥土;麟兰花芯那么纯洁,那么柔顺,但招来白苍蝇悠悠地爬行,让人恶心。
- Living habit of mulberry white fly and its control measures 桑粉虱的生活习性及防治方法
- Occurrence Rule and Integrated Controlling of White Fly in Hothouse 温室白粉虱的发生规律及无公害综合防治对策
- Summary on the biology and control research of white fly in interior hothouse 国内温室白粉虱的生物学习性与防治研究综述
- I heard John was the republican's great white hope. 我听说约翰是共和党人寄予巨大希望的人。
- The land is laid down with red or white clover. 这块土地种上了红花和白花苜蓿。
- This cloth has a pattern of blue and white squares. 这种布有蓝白格子的图案。
- England are playing in the blue and white strip. 英格兰队穿著蓝白色运动衣进行比赛。
- Black and white show a striking contrast. 黑和白形成明显的对比。
- White lines divide the playing area into sections. 这些白线把赛区分成各个部分。
- Do you know the man wearing a white shirt? 你认识那个穿白衬衣的人吗?
- I lost a white handkerchief with a blue border. 我丢了一块带蓝色花边的白手绢。
- Her white face and her dark dress contrast sharply. 她洁白的脸和她黑色的衣服形成强烈的对比。
- The country was bled white by her foreign rulers. 这个国家在异族的统治下民穷财尽。
- Poor Mr White dropped dead in the street yesterday. 可怜的怀特先生昨天突然死在大街上。
- Red and white predominate in these flowers. 这些花中大部分是红色和白色的。
- Mrs White always talks a blue streak. 怀特太太总是一开口就滔滔不绝。
- People often drink white wine with turkey. 人们经常边吃火鸡肉边喝白葡萄酒。