The direct effect of number of effective cones per plant was the strongest, followed by diameter of primary head.

单株有效花球数对单株花产量的直接效应最大，其次为顶花球直径。

youdao

A ketch therefore USES three primary sails: the mainsail and head sail, as on a sloop, plus the mizzen sail aft.

因此，双桅帆船使用三面主要的帆：与单桅帆船一致的主帆，前帆，以及尾桅帆。

youdao

After the talk, Lotto and Dave Strudwick, Blackawton Primary School's head teacher, decided to try to do an original research project with the students where the kids would have full control.

那次演说之后，洛托和布莱·考顿小学的校长戴夫·斯特拉德威克决定，设法与学生们一道做一个有独创性的研究项目，孩子们可以完全控制项目。

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Emma Northey, head of primary learning at the school, says fifty-one nationalities were represented.

VOA: special.2011.03.10

It was undertaken with two primary figures at its head for many, many years.

这项研究是由两大人物牵头,进行了很多很多年

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Nigel Utton, of Kent Primary Head Teachers Executive, said positive discrimination was the only way to achieve a 50-50 gender balance.

BBC: Male primary teacher 'positive discrimination needed'

Primary head teachers and council education bosses have urged the Scottish government to resist calls to delay the Curriculum for Excellence.

BBC: Row over plans for new curriculum in Scotland

Vice-president of the NAHT and Staffordshire primary school head teacher Bernadette Hunter said Ofsted was putting an "intolerable amount of stress" on heads.

BBC: Heads attack chief inspector's 'bully boy tactics'