致癌物质

Pumpkin can prevent and cure diabetes, accelerate secretion of insulin, eliminate mutagenic effect of nitrosamine which is a kind of carcinogenic substances, prevent cancer and also can promote regenerative power of cells of liver and kidney.

南瓜可以防止糖尿病，促进胰岛素分泌，消除致癌物质---亚硝胺的突变作用，防止癌症的发生，且可增强肝、肾细胞的再生能力。

In addition, we all know, garlic contains allicin can kill the bacteria, for many human digestive tract bacteria are inhibited, thereby blocking the body carcinogen nitrosamine synthesis.

另外，众所周知，大蒜中含有能杀灭细菌的大蒜素，对许多人体消化道细菌有抑制作用，进而阻断人体内致癌物质亚硝胺的合成。

However, perc was also the first chemical to be classified as a carcinogen by the Consumer Product Safety Commission (a classification later withdrawn).

不过， perc也是第一个化学品被归类为致癌物质，由消费者产品安全委员会。

Tobacco use, exposure to industrial carcinogens, and phenacetin nephropathy are some of the important etiologic factors

烟草及工业致癌物质是其高危因素，在某些人群中，滥用非那西丁是最重要的致病因素。

More and more cancer-causing additives are discovered in processed foods.

越来越多的致癌物质是在食品制造的过程中。

On that basis,the authors used the single-factor assessment method and multi-factor assessment method(comprehensive pollution index and Nemeron pollution index)to assess the data of groundwater pollution by this refuse landfill site.

结果表明，该垃圾场对地下水的污染极其严重：综合污染指数可达到59；单项污染组分如NO2-、NH4+、COD等普遍比参照值高出几十倍，致癌物质NO2-则高出340多倍。从水质的角度看，地下水中有的污染物(NO2-、NH4+、COD)已经超出地下水Ⅲ类水质标准数十倍甚至100多倍，到了不能饮用的程度。

Belief that secondhand smoke harms the health of children was not independently associated with rules prohibiting smoking in the home and car.

简单的将孩子们与吸烟者呼出的烟雾隔离并不能真正的保护孩子，"三手烟"中的致癌物质对任何年龄段的人来说，都有造成癌症的影响。

In the preoxidation process the potassium permanganate has been used instead of chlorine in the process of pretreatment, which then distinctly control the formation of DBPs such as choroform and carbon tetrafluoride which can result in cancer.

用高锰酸钾预氧化取代了原工艺的前加氯，减少了DBPs前体物的生成量，有效地控制后续氯化消毒中的三氯甲烷和四氯化碳等致癌物质的生成。

Emphasizing that thirdhand smoke harms the health of children may be an important element in encouraging home smoking bans.

简单的将孩子们与吸烟者呼出的烟雾隔离并不能真正的保护孩子，"三手烟"中的致癌物质对任何年龄段的人来说，都有造成癌症的影响。

EB virus is a human B-lymphocyte affinitive Herpesviridae, discovered in 1964 by Epstein and Barr during their research of African children malignant lymphoma, which is now defined as type I carcinogen by International Agency for Research on Cancer.

EB病毒(Epstein-Barr Virus， EBV)属疱疹病毒科，1964年由Epstein和Barr在研究非洲儿童恶性淋巴瘤时发现的一种感染人类B淋巴细胞的疱疹病毒，被国际癌症研究机构（International Agency for Research on Cancer， IARC）归为I类致癌物质，在全世界人群中感染率超过90%。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。