adventive

Tropical American annual weed with small radiate heads of white flowers; adventive in southern United States.

热带美洲一年生杂草，有辐射状边花的白色头状花序；暂生于美国南部。

The process itself is referred to as adventive embryogenesis.

其过程本身称为不定胚胎发生.

A sharp demarcation of adventive embryos from zygotic embryos cannot be drawn.

不定胚与合子胚之间不能划分出明显的界限.

For long-term tissue cultures of domestic carrot the only requirement for adventive embryogeny was addition of an auxin.

栽培的胡罗卜进行长期组织培养时，对不定胚发生的唯一要求是加进植物生长素。

Psychological intervention on anxiety emotion of adventive workers with bone fracture

对外来工骨折后焦虑情绪的心理干预

Deciduous clump-forming Asian shrub or small tree; adventive in the eastern United States.

每年落叶的丛生的亚洲灌木或小树；移到美国东部的外来植物。

European goosefoot with strong-scented foliage; adventive in eastern North America.

欧洲的一种藜属植物,叶具有强烈的气味; 被引入北美东部.

Erect Old World perennial with faintly musk-scented foliage and white or pink flowers; adventive in United States.

竖直的东半球的多年生植物，有微弱的藿香味的叶子和白色或粉色的花；美国非本土的一种植物。