查询词典 weedy

Very leafy malodorous tropical weedy shrub whose seeds have been used as an adulterant for coffee; sometimes classified in genus Cassia.

一种热带杂草，具有腥臭味的叶和种子，用作咖啡的掺杂物；有时归入决明属。

I drove to meet him in a weedy and garbage-strewn alleyway in San Rafael.

我开车去San Rafael一个杂草丛生、垃圾遍地的巷子见他。

Any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly ''.

北美洲任何构成豚草属的植物，有变应原的花粉，治疗花粉热和气喘。

Any of certain coarse,weedy plants of the genera Ambrosia,Erigeron,or Heracleum.

猪草各种杂草或粗糙的肠草，正蓬或独河属植物

Any of several weedy composite plants of the genus Artemisia .

蒿属的任何一种混合的杂草。

Genus of weedy Old World yellow-flowered herbs usually containing a bitter-tasting substance: bitterweed.

旧大陆一个草本属，生长茂盛，黄花，常含苦素；美洲的几种含有苦素的植物的任一种。

There was a positive correlation between the level of genetic diversity and the outcrossing rate of weedy rice populations, indicating that the introgression from cultivated to weedy rice may enhance the genetic diversity of weedy rice populations.

辽宁省六个地区杂草稻的遗传多样性水平从低到高的顺序与杂草稻发现时间从早到晚的顺序非常相似，据此推测杂草稻的遗传多样性水平可能与治理杂草稻的强度和时间有关系。

Nowadays, however, more and more weeds are occurring in rice fields, particularly the conspecific weedy rice (O. sativa f. spontanea).

但是，现在水稻的生产受到越来越严重的杂草危害，尤其是与它同属于一个生物物种的杂草稻(weedy rice，D.sativa L.f.spontanea)。

Using nuclear DNA C-values for 539 angiosperms in China, we examined the variation of these values among growth forms and taxonomic groups and the relationship of these values with invasiveness. Mean DNA C-value of the 539 angiosperm species was 4.06 pg. Mean DNA C-value was(1) significantly lower for woody species (1.84 pg) than for herbaceous species(5.02 pg);(2) significantly lower for 360 dicots (2.20 pg) than for 179 monocots (7.80 pg);(3) significantly lower for annuals (2.78 pg) than for perennials(6.65 pg);(4) significantly lower for 134 weed species (1.93 pg) than for herbaceous non-weeds (6.75 pg) and for several families that have an unusually high proportion of weed species;(5) significantly lower for 47 exotic weed species (1.76 pg) than for 134 native weeds (1.93 pg), but significantly lower than that of "non-weedy" herbaceous species (6.75 pg);(6) lower for weeds than for "non-weedy" species in same genus or family; and (7) in herbaceous species, generally lower for weedy compared to "non-weedy" species, with some exceptions such as Avena fatua, whose DNA C-value is as high as 14.15 pg, contrarily, and some "non-weedy" herbaceous species in Cruciferae and Cucurbitaceae with very low values.

统计了中国境内有分布的539种被子植物的DNA C-值，分析了它们在不同分类群、生活型、倍性、生活史类型以及在杂草和非杂草类群中的分布情况，主要结果如下：(1)539种被子植物DNA C-值平均为4.06 pg，其中木本植物的DNA C-值平均为1.84 pg，低于草本植物的平均值(5.02 pg)；(2)双子叶植物(360种)的DNA C-值平均为2.20 pg，极明显地小于单子叶植物(179种)的平均值(7.80 pg)；(3)1年生植物的DNA C-值平均为2.78 pg，明显小于多年植物的平均DNA C-值(6.65 pg)；(4)134种杂草的DNA C-值平均为1.93 pg，明显小于非杂草草本植物的平均值(6.75 pg)，含杂草较多的科，平均DNA C-值相对较小；(5)统计的47种入侵杂草的DNA C-值平均为1.76 pg，略小于134种杂草的平均DNA C-值(1.93 pg)，极显著地小于非杂草性草本植物(6.75 pg)；(6)以科为单位，不同科的DNA C-值存在着极大的差异；(7)DNA C-值与染色体倍性的关系并不明显，但是，随着倍性的增加，基因组变小；(8)在同一科、属中，与非杂草相比，典型杂草的DNA C-值往往偏小；(9)总体上杂草或杂草性强的植物，它们的DNA C-值比非杂草性植物的要小。

The main results are as following: 1.95 wild and weedy adzuki bean germplasm accessions were analyzed for the morphological genetic diversity. The results showed that wild adzuki bean and weedy adzuki bean were obvious different in 17morphological characters, Based on the morphological data, 95 accessions were clustered into 5 groups.

结果表明，野生型小豆与半野生型小豆在17个性状方面有明显的差别。95份野生小豆种质资源通过聚类分析，截值为1.516时可划分为5大类群，其中第1类群来源于日本和韩国地区的74份种质，可进一步划分为3个亚类。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。