| 单词 | 芘 | ||||||||||
| 释义 | 芘—Malva sylvestris
|
现时，有一种PAH（苯并[a]芘）被世界卫生组织的国际癌症研究机构列为「令人类患癌」（即第1组）的物质，另外有三种PAHs(环戊[c,d]芘、二苯并（a,l）芘及二苯并（a,h）蒽）被世界卫生组织的国际癌症研究机构列为「可能令人类患癌」（即第2A组）的物质。 cfs.gov.hk | One PAH, benzo[a]pyrene, is classified as “carcinogenic to human” (i.e. Group 1 agent) and three PAHs namely, cyclopenta[cd]pyrene, dibenzo[a,l]pyrene, anddibenz[a,h]anthracene, are classified as [...] "probably carcinogenic" to human (i.e. [...]Group 2A agent) by the International Agency for Research on Cancer (IARC) of the World Health Organization. cfs.gov.hk |
它还调整了 PM10、二氧化氮、铅和苯并[a]芘等污染物的浓度限值(环境保护部， [...] 2012)。 ecegp.com | It also adjusted the limit value for the concentration levels of PM10, NO2, [...] lead, and benzo[a]pyrene(BaP) (Ministry [...]of Environmental Protection 2012). ecegp.com |
您会发现芘分子由四个稠合苯环组成且为完全平面结构。 crystalimpact.de | As you see, the molecule consists of four condensed benzene rings and is completely flat. crystalimpact.de |
那么首先我们需要创建所谓的 “least-square（最小二乘）”平面，分别通过两个相邻且平行的芘分子，然后测量两个平面 间的距离。 crystalimpact.de | In order to do this, we will first create so-called ”least-squares” planes through two adjacent parallel molecules and measure the distances between the planes afterwards. crystalimpact.de |
对多维气相色谱的核心部件中点限流器进行了改进,用一段0.25 mm i.d.毛细管柱取代石墨限流管,Y形玻璃压合连接器取代两孔石墨垫,显着提高了一维色谱保留时间的稳定性,保证了中心切割范围的准确性,且消除了石墨对苯并［a］芘的吸附残留。 chrom-china.com | The graphite restrictor was replaced by a 0.25 mm i.d. fused silica open tubular and the two-hole graphite ferrule was replaced by a press-fit glass Y-splitter to improve the stability of retention time on the 1st dimensional column and eliminate the carry-over effects of graphite. chrom-china.com |
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