采用水蒸气蒸馏法从杜梨花中提取挥发油，用气相色谱-质谱法对化学成分进行鉴定。
The essential oil from the flowers of Pyrus betulaefolia Bunge was abstracted by steam-stilling and analyzed by capillary GC-MS method.
本文对断轴进行了宏观断口检查并对化学成分、力学性能、高低倍组织及微观断口进行了分析。
In this paper, the fracture surface of a failed axle was examined macroscopically. The chemical composition, mechanical properties, ma-cro-and microstructure of the fracture surface were analysed.
采用水蒸气蒸馏法从巴旦木杏仁中提取挥性化学成分，用气相色谱-质谱法对化学成分进行鉴定。
The volatile chemical components extracted from the almond of Prunus amygdalus Stokes was abstracted by steam-stilling and analyzed by GC-MS method.
她说目前确认化学成分是否造成癌症的途径每次对其进行试验。
She says the current way to identify whether chemicals cause cancer is to test them one at a time.
用四极质量分析仪对碳化硅颗粒表面吸收的气体进行了分析，获得了碳化硅颗粒的表面化学成分。
The gases absorbed on the surface of SiC particles are analyzed with the quadripole mass analyzer.
一项对患有高血压的实验鼠的研究显示，添加了辣椒粉的辛辣食物含有一种天然的可以降低血压的化学成分。
Spicy food flavoured with hot chilli peppers contains a natural chemical ingredient that may lower blood pressure, according to a study on a strain of laboratory rats with hypertension.
科学家们称，要全面鉴别出某种物体的化学成分，需要使用频率连续变化的太赫兹频率级激光对物体进行照射。
The researchers say that accurately determining the chemical composition of objects requires exposing it to different and continuous ranges of terahertz frequencies.
有必要定期监测媒介对广泛使用的杀虫剂的易感性，保证选择适宜的化学成分。
Regular monitoring of the vectors' susceptibility to widely used insecticides is necessary to ensure the appropriate choice of chemicals.
姑且不论它的味道，科学家们已经知道咖啡里含有多种对健康具有潜在影响的化学成分，其中有好的、也有坏的影响。
Flavor aside, scientists have recognized it as a complex blend of chemical compounds with potential health effects, both good and bad.
没有药物能治愈它，也没有药物对此有长期疗效。 那些提升大脑关键化学成分的药物不是对每个人都适用，而且它们的药效也会随着时间流逝而减弱。
There is no cure and existing drugs, which raise levels of key brain chemicals, do not work for everyone and their effects wear off over time.
例如，技术人员可以通过其化学成分分析其创作日期，或者对一幅画做X光透视，揭示其表面下有什么。
Technicians can date paint from its chemical composition, for example, or X-ray a canvas to reveal what lies below the surface.
而孕期选择的护肤品一定不要含有激素类的和对胎儿有害的化学成分。
And pregnancy skin care of choice must not contain hormones and harmful on the chemical composition of the fetus.
很久以前，人们对宝石的化学成分没有研究。
Long ago, people did not investigate the chemical composition of stones.
本方法是一种对亚麻纤维进行化学成分定量分析的好方法。
The method is good for quantitative analysis of flax fiber chemical composition.
目的研究临潼矿泉对人体某些化学成分的影响。
Objective to observe the effect of Lintong spa on some chemical elements in human body.
采用田间试验研究了成熟期灌水对烤烟农艺性状、化学成分和致香物质含量的影响。
A field experiment was conducted to study the effects of irrigation during maturing stage on agronomic characteristics, chemical components and contents of flavor matter of flue-cured tobacco.
目的：对细辛的化学成分和生物活性进行综述。
Objective In order to give brief introduction on the research work relating to Asarum 's Chemical Constituents and Bioactivity.
目的：对青葙子的化学成分进行研究。
Objective: To study the chemical constituents of Semen Celosiae.
综述了烟草膨胀的目的和作用、烟草膨胀方法的分类，和各种烟草膨胀方法以及膨胀对烟草化学成分的影响。
The purpose and function of tobacco expansion, the classification of tobacco expansion processes, and the expansion processes and their effects on the chemical compositions of tobacco were reviewed.
前言：目的：对仙人掌化学成分进行系统研究。
Objective: To make a systematic study of the cactus chemical composition.
通过干法无胶纤维板制造过程中对木材化学成分的转化和含量变化的研究，探讨了干法无胶纤维板的粘合机理。
The paper studied the reaction mechanism of self bonding in dry process binderless fiberboard manufacture by investigating the chemical composition and conversion of wood.
采用人工发酵法研究了氧气条件对发酵烟叶化学成分的影响。
Effect of oxygen condition on chemical components in flue cured tobacco was studied by method of artificial fermentation.
目的研究葛根芩连汤不同配伍对主要化学成分、药理效应变化的影响，综合分析该方的配伍规律。
Objective To study the influence on chemical components and pharmacological effect of Gegen Qinlian Decoction (GQD) by different compatibility whose regulation was analyzed comprehensively.
目的对核桃花的化学成分进行分离与鉴定。
OBJECTIVE To study the chemical constituents of the flower of Juglans regia.
目的对核桃花的化学成分进行分离与鉴定。
OBJECTIVE To study the chemical constituents of the flower of Juglans regia.
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