The heterosis and combining ability of black point rate of wheat seeds were studied on 24 hybrids which came from 6 sterile lines×4 restoring lines,as well as some related parents.
利用6个不育系和4个恢复系及其24个杂种为材料,初步研究了小麦种子黑胚率的杂种优势和配合力。
The author of this paper analyzed the relativity between sunspot and solar flare and earthquake,and concluded that the statistical relationship between solar activities and small earthquakes in that area didn t exist,strong earthquakes had puny relativity with solar activities.
作者选取云南省及周边地区1965~2006年2级以上地震为样本,使用时间序列分析方法和相关分析方法对地震与太阳黑子、耀斑的相关性进行了研究,得到中小地震为主的样本与太阳活动不相关、大地震与太阳活动存在弱相关性的结论。
By data of nearly 400 years,the relations between sunspots and El Nino ElNino as well as the precipitation in Northwest China are studied.
利用近４００ ａ 资料，分析了太阳黑子与厄尔尼诺、西北区降水的关系，结果表明：太阳黑子低值年和谷年易出现厄尔尼诺事件，在太阳黑子谷年易旱。
preceding spot and following spot
前导黑子和后随黑子
The darkest region of a sunspot.
太阳黑子中的最黑暗的区域
ancient. sunspot observation
太阳黑子的古代观测
He and the other boys wore Western-style school uniforms of white shirts, black trousers, shoes and socks.
当年的孩子们都要求穿西式的校服--白衬衫，黑裤子、黑鞋子和黑袜子。
A big black bug bit a big black dog on his big black nose!
一只大黑虫咬了一只大黑狗的大黑鼻子。
He wore a droopy moustache, and was kind of dark-skinned, with dark hair and dark eyes.
他留着下垂的小胡子，皮肤有点黑，黑头发、黑眼睛。
South African monkey with black face and hands.
非洲南部黑脸黑手的猴子。
Dark hair, dark eyes, a wide, boyish face beneath a mop of dark hair.
黑头发，黑眼睛，一张宽大又孩子气的脸。
Two black plaits hung down her back.
她的两条黑黑的辫子垂在背上。
The driver wore a cap and his face was thin and very tanned.
司机戴着帽子，脸孔瘦削，晒得黑黑的。
Its small dark edible fruit
黑莓（可供食用的黑色小果子）－－
Children become tired towards evening.
孩子们到天黑时就累了。
He put on his black hat.
他戴上他的黑帽子。
He felt his way around the dark room.
他在黑屋子中到处摸索。
The teacher's desk is in front of the blackboard.
老师的桌子在黑板前面。
The house was all dark to the front.
房子的正面一片漆黑。
In the dark I bumped into a chair.
我在黑暗中碰到了椅子.
I made blackberry jam yesterday.
昨天我做黑莓子酱。