1)  local universities
二类本科院校
1.
The essay analyzes the feasibility of bilingual teaching for physics experiment in local universities as a start,and then examines several problems of bilingual teaching in some universities to work out some principles and techniques of bilingual teaching for local universities.
探讨了中国高校开展双语教学的必要性,分析了在二类本科院校中开展物理实验双语课的可行性。
2)  class II reserves
二类储量
1.
V formation is the first Pilot test unit of class II reserves with high temperature polymer flooding in Henan oilfield.
双河油田V上层系是河南油田第一个二类储量高温聚合物驱先导试验区块,通过采取优化聚驱井网,提高井网控制程度;利用油藏数值模拟方法优化聚合物注入参数;注入聚合物前调剖封堵大孔道;见效油井及时提液等对策,使该区块日产油由注聚前125t增至182t,综合含水降低了3。
3)  class II reservoirs
二类油层
1.
Based on the analysis of dynamic characteristics in field tests area and commercialized production areas for polymer injection in class II reservoirs, some problems about polymer flooding in class II reservoirs can be found, such as low injectivity, low liquids productivity, short period with low water cut and serious planar conflicts.
通过对已开展的二类油层注聚试验区和工业化区块的动态反映特征分析,指出二类油层在聚驱开发过程中存在着注入能力差、产液能力低、见效含水低值期短、聚驱平面矛盾突出等问题。
2.
How to determine reasonable injection-production well pattern and how to optimize well pattern in class II reservoirs during polymer flooding are the problems needed to be solved at right.
喇嘛甸油田将直接面临上返的问题,但二类油层注聚开发合理的注采井距、井网如何优化等都是目前急需解决的问题。
4)  ClassⅡoil reservoir
二类油层
1.
According to the geologic features of ClassⅡoil reservoir in North Saertu development area, this paper has made careful study on the development effect and economic profit of ASP flooding, so as to find the favorable well spacing, combination of strata series and ASP development optimization method.
针对萨北开发区二类油层的地质特点,为探索适合二类油层三元复合驱的井网井距、层系组合方法,优化二类油层进行三元复合驱的开发方式,从开发效果、经济效益等方面进行了详细的论证,总结出以聚驱控制程度为中心,对二类油层采取限定对象、缩小井距、细分层系的开发方式。
5)  sub-layers
二类油层
1.
Optimization of the injection parameters of sub-layers polymer flooding in Daqing Oil Field;
大庆油田二类油层聚合物驱注入参数的优选
2.
The heterogeneity of Sub-layers is grave.
二类油层非均质性严重,这一特性决定了二类油层注聚过程中不可避免同一单元内存在水、聚两驱共存现象,使聚驱潜力难以得到发挥。
6)  case Ⅱ water
二类水
参考词条
补充资料:多氯二苯并二噁英类
分子式:
CAS号:

性质:(1)多氯二苯并二噁英类(polychlorinated dibenzo-p-dioxins;PCDD)的简称。又称二苯基二噁英(diphenylene dioxins)。中间环5、10两位置为氧原子,其余1~4,6~9各位置可被卤素原子或有机基团取代。被氯原子取代时,随氯原子数(1~8个)的多少,可形成8个同系物,75个异构体(同族体)。性质稳定,不易分解。其毒性与氯原子取代的位置密切相关,有4个氯原子的二噁英是有毒的(共22个),其中四氯二苯并二噁英(TCDD)毒性最强。二噁英的前驱物是氯联苯、氯苯、氯苯酚等含氯芳香烃化合物,在燃烧过程中形成二噁英。它在自然界能天然生成,人为来源主要是废弃物的焚烧排放物,如城市垃圾、工业废物、医院废物、防腐剂处理过的木材、有机制品、电容器和绝缘器中绝缘液、旧轮胎作能源等的焚烧;工业生产的排放源有造纸厂漂白废液、生产氯的石墨电极渣、催化剂高温氯化活化、钢铁冶炼和废金属回收等。在环境中的分布,地表土中含量最多,植物和河湖沉积物中其次,大气飞灰和地表水中较少。动物实验证实二噁英有致癌致畸作用,列为人类可疑致癌物,其毒性危害程度远超过有机氯农药和多氯联苯。(2)特指四氯二苯异二噁英。

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