突破口

Teachers should look for and promote the knowledge keys to help students find breakthrough ports in professional study, and arrive at the aim of grasp from point to cover.

在教学基本点和重点中，寻找与提升该课程的知识亮点，帮助学生找到学习突破口，以点带面，以达到从入门到精通的目的。

Analysis on Outbreak of Tobacco Whitefly in Cotton Fields of Jiangxi in 2007;2. Inseeticide abuse is an important cause of beet armyworm outbreak;3. Research progress in community mechanism of pest outbreak

探讨多经企业体制改革，谋求多种产业更大发展的思路，以改革产权制度为核心、用工和分配制度为突破口、转换经营机制为重点，找准发展多种产业的战略定

The interrupted career of the Charleroi midfielder Abdelmajid Oulmers has become the chosen battleground.

他们把效力于比利时查内尔俱乐部的摩洛哥球员奥尔莫斯作为突破口。

Though I knew it would infuriate the British and strain our most important transatlantic alliance, I had become convinced that the United States, with its huge Irish diaspora, including people who funneled money to the Irish Republican Army, might be able to facilitate a breakthrough.

尽管我知道这将激怒英国人，使得我们与大西洋彼岸重要的盟国关系紧张，但我相信，由于美国拥有众多的爱尔兰移民，包括一些秘密资助爱尔兰共和军的爱尔兰裔，也许能够促使形成一个突破口。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。