weed [wi:d]

weed的基本解释

n.

杂草, 野草, 菸草

• The garden is full of weeds.
• 园子里杂草丛生。

vt.

除...的草, 剔除

• The general weeded out poor commanders.
• 将军淘汰了无能的指挥官。

• We have to weed out unqualified applicants.
• 我们必须淘汰不合格的申请人。

• First thing tomorrow I'll weed the garden.
• 我明天一大早首先去除园内的杂草。

vi.

除草

• He is busy weeding.
• 他正忙于除草。

weed所属的单词分类

Plant / 植物 [187]

vascular plant  ·  terminal bud  ·  simple leaf  ·  sea weed  ·  sage brush  ·  petrified wood  ·  opposite leaves  ·  lateral bud  ·  lanceolate leaf  ·  incomplete flower

与weed相关的网络例句 [注：此内容来源于网络，仅供参考]

The main achievements of the project are as follows: 1 the hypothesis that a decrease in seed mass causes an increase in mean dispersal distance has been tested based on the experiments of weed dispersal by wind. The experimental results partly support the hypothesis. The results will help farmers to make an optimal strategy of weed control; 2 a statistic method for inferring probabilistic distribution function of a random variable has been developed, by which probabilistic distribution functions of weed species dispersal have been determined; 3 the reproduction structure of Bromus sterilis has been studied; 4 a more complex CA model with 25 neighborhood cells were built, which can simulate spread of a weed population. This work promotes developments in both theory and application of CA models; 5 the "mean law" in weed control has been proposed. Accordingly, the algorism of patch spring may be calibrated; 6 the "patch" and "true patch" have been mathematically defined so that herbicide can be efficiently applied; 7 simulation validates that initial configurations of weed will affect dispersal of its population and strategies of controlling it, or its distribution patterns affect its dispersal progresses.

主要完成的工作和取得的成果有：1）用实验证实了重量较轻的杂草种子并不一定飞得比较重的远，其结果有助于农民制订杂草的优化控制策略；2）发展了一种推断随机变量分布函数的统计方法并用它来获得了几个杂草种的扩散分布函数；3）对杂草Bromus sterilis的繁殖结构进行了研究；4）建立了一个具有25邻的较复杂的能模拟杂草扩散的CA模型，并在理论和应用方面促进了CA模型的发展；5）在杂草控制方面提出了&平均法则&，据此可对按块施药方法进行校正；6）精确地定义了&块&和&真块&以便在杂草控制中能更有效地使用除草剂；7）模拟证实杂草种群的初始配置影响其扩散和控制策略，或者格局影响过程。

The present study investigatated the effect on the diversification of weed community, including weed abundance, dominance, evenness, biomass, and mean height after mulching straw and intercropping white clover in the tea plantation from 2005 to 2006. The results were as follows: 16 families and 31 species were found in total. In April, the dominant species characterized with slow growth, lower biomass, and less than 30 cm height; in July those who grow faster with higher biomass and height became dominant; In September, these malignant communities reduced, while the oxalis and diffusa characterized with lower biomass and low height gradually increased. In the three seasons, the weed abundance, community diversity and evenness increased, and the dominance, the biomass and average height of weeds remarkably reduced after intercropping white clover and muching straw.

结果表明：茶园共有杂草16科31属31种，春季（4月）以生长速度较慢、生物量小、株高在30 cm以下的杂草为主，夏季（7月）以生长快、植株高和生物量大恶性杂草为主，秋季（9月）恶性杂草开始减少，酢浆草、白花蛇舌草等生物量小、株高矮的杂草逐渐增多；稻草覆盖处理茶园春、夏和秋季3个观测时期杂草物种丰富度、多样性、均匀度等指数均高于清耕对照，优势集中性指数低于清耕对照；间种白三叶草处理春、夏和秋季3个观测时期杂草总数量和生物量均显著低于清耕对照，夏、秋季杂草平均株高显著低于清耕对照；稻草覆盖和间种白三叶草处理春季茶芽重和产量显著高于清耕对照，鲜叶中游离氨基酸含量高于清耕对照，茶叶感官评审得分高于清耕对照处理。

The spraying control system aiming at weed based on machine vision was designed and developed. The index of 2G-R-B is used for segmentation and the method of improved pixel lateral histogram is used for extracting the center of crop row,the method of threthold is also used for identificating between-row weed and BP ANN based on fratal and texture is used for identificating in-row weed. PLC correspondence and performing procedure is desi -gned and developed.

设计和开发了基于机器视觉的麦田除草剂对准喷药控制系统，该系统的视觉子系统首先用过绿的2G-R-B进行植物与土壤背景的分割，其次用改进像素直方图法识别作物中心行，用阈值法识别行间杂草区域，用BP神经网络基于分形和纹理的共同特征识别行内杂草区域，设计并开发了计算机与PLC的通信程序，设计了PLC的运行程序。

与weed相关的网络解释 [注：此内容来源于网络，仅供参考]

weed：杂草

而手机却是古怪的漫无目的的"任意漫步者"(a random walk);如果说过去的技术是需要特殊的条件才能够生存、发展的"小生境居民"(Niche-dweller),手机则成为"杂草"(weed),可以随处丛生(James Katz&Mark Aakhus,

weed：野草

因此,马路两侧的草地上,野草(WEED)丛生. 随便开车到哪里去,但见远远望去,本来应该是绿油油的大片大片的绿地,现在,却闪耀着黄澄澄的光芒. 原来,那是大量的野草,如蒲公英等肆无忌惮地到处生长,乏人管理的结果.

weed：草

英语高手必备:记单词就要这样不择手段 象形词义串联记忆法将象形单词的意义串联成一句汉语或者汉语顺口溜同-eed:喂(feed)养(breed)行为(deed)确实(indeed)需要(need)芦苇(reed)种子(seed)杂草(weed).

weed：杂草;野草

▲wedding 婚礼,结婚 | weed 杂草,野草 | week 星期,周

weed out：除去杂草(淘汰)

when hell freezes over 地狱结冰(绝不可能的事) | weed out 除去杂草(淘汰) | well rounded全 能,全才