生命化学的

The separation ability of semipermeable membranes needs to be understand from a molecular point of view for applications in the life sciences, chemistry, and chemical engineering.

从分子水平上研究半透膜的性质在生命科学、化学以及化学工程中有着重要的作用。

For example, male-male copulations in locusts can be costly for the mounted male, and this cost may in turn increase selection pressure for males' tendency to release a chemical called panacetylnitrile, which dissuades other males from mounting them, said Bailey.

贝利说：&举例来说，雄性蝉之间的交媾对上位的雄性蝉来说代价昂贵，会付出生命的代价，而这种代价可能反过来增加了选择压力，促使雄性蝉倾向于释放一种称为panacetylnitrile的化学物，这种化学物会阻止其他雄性蝉，避免他们上位交媾。&

The existence of natural toxins is a fundamental phenomenon of life, it is a set of specific bioactive chemical substance, which evolved through a long period from nature. Natural toxins show multiplicities in biogenic source, chemical structure, biological function and active mechanism.

生物毒素的存在是一种重要的生命现象，它是自然生物界长期进化发展的具有特殊生物活性的化学产物，而且在生源、化学、功能、作用机制等方面表现出多重多样性。

The existence of natural toxins is a fundamental phenomenon of life, it is a set of specific bioactive chemical substance, which evolved through a long period from nature. Natural toxins show multiplicities in biogenic source, chemical structure, biological function and active mechanism.

文摘： 生物毒素的存在是一种重要的生命现象，它是自然生物界长期进化发展的具有特殊生物活性的化学产物，而且在生源、化学、功能、作用机制等方面表现出多重多样性。

The properties of ISEsand sensitizing luminescence of rare earth cations were also studied.

超分子化学是当前化学、生命科学和材料科学的前沿研究领域之一。

Cyclic acylphosphoramidates (2-hydroxy-2-oxy-1,3,2-oxazaphospholidine-5-ones,CAPAs) are phosphate activated amino acids possessing both a carboxyl-phosphorylanhydride and a phosphoramidate bond in a ring.

为了理解P-N键在生命起源化学和生物化学中的可能作用，本论文系统地研究了模型化合物N-磷酸化氨基酸(N-phosphono-amino acids，简称NPAAs)的化学性质。

At these nadirs, chemosynthesis—the thermal and chemical energy given off by deep-sea vents—gives life to creatures like the eelpout fish and tubeworms pictured here.

在这些nadirs ，化学合成-热和化学能源鉴于深海喷口――生命的动物一样， eelpout鱼类和管虫图案在这里。

At these nadirs, chemosynthesis—the thermal and chemical energy given off by deep-sea vents—gives life to creatures like the eelpout fish and tubeworms pictured here.

在这些最低点，化学合成---上升的热气流和化学能量释放出经由深海的排气口---给予生命的生物如粘鱼之类和管蠕虫图片在这里。

The theory or doctrine that life processes arise from or contain a nonmaterial vital principle and cannot be explained entirely as physical and chemical phenomena.

生机论一种理论或学说，认为生命的过程来自于或包含有一种非物质的生命原则，不能完全解释为物理和化学现象

What these extraterrestrials will be like depends on where and how we expect to meet them.

太阳系中有多个星球可能适于类地生命的存在，这种生命基于碳生物化学特性，将水作为生存要素。

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。