日本龟蜡蚧生物学特性及化学防治研究 studies on biological characteristics and chemical control of ceroplastes jponicus green
牙体硬组织的物理和化学特性 physical and chemical properties of dental tissues
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Even if the round test bar indicates acceptable chemical and physical properties , the casting itself may have undetectable inherent deficiencies that reduce strength or corrosion resistance 即使圆形测试杆表明化学特性和物理特性是可接受的,逐渐本身仍然可能存在难于察觉的有损强度或防腐能力的内部缺陷。
The chemical property of formation water at present is the outcome of long and complex evolvements of underground hydrodynamic and chemical fields caused by geographical and geologic environmental transitions 目前地层中地层水的化学特性是地理、地质环境变迁导致的地下水动力场和化学场经漫长、复杂演化的结果。
Utilizing the well understood chemical properties of atoms and molecules ( how they “ stick ” together ) , nanotechnology proposes the construction of novel molecular devices possessing extraordinary pro - perties 利用人们熟知的原子和分子的化学特性(如原子和分子是如何“粘”在一起的) ,纳米技术令具有非凡特性的新颖的分子构成物的问世成为可能。
For the extensive chemistry of boron is such that it can be incorporated into a multitude of different chemical structures , there have been many kinds of boron compounds synthesized for potential use in bnct 由于硼十原子( 10b )先天上的化学特性使它可以被纳入许多种化合物结构里,各式各样的含硼化合物现今都可以合成出来,考虑用在硼捉中子治疗上。
An experiment was conducted to examine ozone disinfection of effluents from a municipal secondary sewage treatment plant . affecting factors such as ph , contact time and ozone dose are studied 摘要介绍了臭氧在水中的化学特性和消毒的基本原理,通过试验研究了臭氧在城市污水深度处理消毒中的反应过程,认为臭氧在城市污水处理二级出水中的消毒是可行的。
The physic - chemical properties of bio - oil produced from biomass flash pyrolysis experiments were analyzed . the influences of process parameters on bio - oil properties were investigated , and the bio - oil produced from pyrolysis of different biomass feedstock was also compared 本文还分析了通过试验所制得的生物油的物理和化学特性,并结合工况参数分析了它们对生物油理化特性的影响规律。
If you are uncertain whether the goods you consign is dangerous goods , you can contact your supplier or manufacturer of goods to obtain the material safety data sheet ( msds ) which shows the physical and chemical properties of goods 如果你不清楚托运的货品是否属于危险品,你可以联络你货品的提供人或制造商去取得一份物料安全资料报告,即materialsafetydatasheet (简称msds ) ,去取得物料的性质及化学特性。
These reflex areas have various uses in hydrotherapy , and because of water property , we can effectively make use of temperature and water pressure massage therapy to act as stimuli to achieve the reflex effects for various internal parts of our body 这些反射区对水疗应用有好几方面,由于水的物理与化学特性,我们可以很有效的利用温度以及压力按摩来作为刺激因素来达到体内各部位的器官产生反射效应的效果。
Apart from the concentrations and chemical properties of the pollutants , the person s age and general state of health , the duration of exposure , factors such as the weather condition and the distance from the emission sources also affect the nature and extent of the health effects observed 除了空气中污染物的浓度与化学特性之外,有关人士的年与一般健康状况接触污染物的时间长短气候情况以及排放源头与接触者之间的距离等,都会对健康构成不同的影响。