facultative

基本解释

• adj.能力的；偶发的；任意的；许可的；[生]兼性寄生的

同根派生

英汉例句

双语例句

• Secondary II is facultative, and is spread among many schools, depending of the Student"s interest.
  中级教育II是特许的，主要是根据学生的兴趣而存在于许多学校中。
• This method is effective to the facultative anaerobic bacteria or aerobic bacteria with hydrogenase .
  这种方法对于用氢化酶的兼性厌氧细菌或需氧细菌是有效的。
• Nitrate can be used by facultative organisms living under intermediate conditions referred to as anoxic.
  硝酸盐能够被生活在中等缺氧条件下称为兼性生物体所利用。

权威例句

• Instead, it uses a stationary pump about the size of a lunchbox to inject active, or "vegetative, " bacteria—harmless strains of facultative anaerobes—into the drains of restaurants, meatpackers, hospitals and photo processing labs.
  FORBES: Germ warfare
• Instead, the company uses a stationary pump about the size of a lunchbox to inject active, or "vegetative, " bacteria-harmless strains of facultative anaerobes-into the drains of restaurants, meatpackers, hospitals and photo processing labs.
  FORBES: Germ Warfare

词组短语

短语

• facultative anaerobe [微]兼性厌氧菌;嫌气性细菌;兼性嫌气生物
• facultative reinsurance [保险]临时分保;[保险]临时再保险;再保险;临时分保临时再保险
• facultative heterochromatin [细胞]兼性异染色质;异染色质;功能性异染色质;兼性异染色质
• facultative respiration 兼性呼吸
• Facultative anaerobes 兼性厌氧菌;兼性厌氧细菌;兼性嫌气生物;兼性厌氧

英英字典

柯林斯英英字典

• empowering but not compelling the doing of an act

专业释义

环境科学技术

• 兼氧

  TA could be removed quickly from wastewater in aerobic condition, the removal rate of TA can be above 96% within 12~16h of HRT. By contrast, facultative system could only degraded 15.3% within 210h of HRT.
  碱减量印染废水中的TA在好氧状态下，属于易降解有机物，HRT为12～16h，去除率在96％以上；在兼氧状态下，属于难降解有机物，HRT210h，其去除率只有η_(TA)15.3％。

• 兼性因素

生物学

• 兼生性
• 兼性的
• 兼性
• 容许的
• 可选择性的

化学

• 兼性的