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The different antioxidant components were extracted from the perilla leaves or seed peel using different solvent,and their antioxidant activity in perilla seed oil was measured.

采用不同溶剂从紫苏叶及紫苏籽皮中提取抗氧化成分，比较它们在紫苏油中的抗氧化活性。

Essential oil was extracted from the petroleum ether-soluble fraction of the leaves showed having antibacterial activity. It was demonstrated that the essential oil has significant antibacterial activity and the activity of the petroleum ether-soluble fraction is attributed to it. The constituents of the essential oil were analysized by GC-MS.10 relatively abundant components were identified on the basis of MS, among which Geranlgeraniol was found in the essential oil of Perilla frutescens leaves for the first time.

对具有抗菌活性的紫苏叶石油醚萃取物进一步精制，从中提取出挥发油，通过抗菌测试证明紫苏叶挥发油具有良好的抗革兰氏阳性菌和革兰氏阴性菌活性，是紫苏叶石油醚萃取物抗菌活性的来源；采用GC-MS对紫苏叶挥发油进行了成分分析，得到10种含量较高的主要化合物，其中的牻牛儿基牻牛儿醇首次在该植物挥发油中被发现。

Perilla seed oil was extracted from the perilla seed by using ultrasonic wave assisted extraction technology. The antioxidantion effects of different antioxidants, such as TBHQ, BHT, and VE were compared with each other by using the Rancimat method.

以紫苏子为原料，利用超声波辅助提取技术提取苏子油；用Rancimat法比较TBHQ、BHT和VE等不同抗氧化剂单独作用及复配时对苏子油的抗氧化作用。

Then according to the characteristic of LFMCW fuze signal,the characteristic parameter is extracted based on periodic ambiguity function.

该方法首先对侦察接收到的信号作二维自相关变换，分析LFMCW引信信号的周期模糊函数特征，然后结合LFMCW引信信号本身的特性，在相关域提取LFMCW引信信号的特征参数。

Compared with the traditional numerical method,the periodic orbit extracted by the analytic approach is more accurate,requires smaller memory size and is more applicable in real time systems;Furthermore,it is more suitable for stable analysis and control of the systems.

与传统的数值提取法相比，所提出的解析法具有提取的周期轨道精确度高、周期轨道信息的存储量小、便于实时应用、易于进行稳定性分析和控制等优点。

The organochlorine pesticide were extracted with acetone and petroleum ether, and purified with sulfuric acid.

用丙酮提取样品中残留的有机氯农药，石油醚萃取，萃取液以浓硫酸净化。

Japan's research also showed that: extracted from the chocolate phenolic substances can enhance the immune blood.

日本的研究还表明：从巧克力中提取的酚醛类物质能提高血液的免疫力。

Phenology information can be extracted from the time series and describe different land cover types quatitatively.

从时间序列数据中提取植被物候信息，可以实现对不同土地覆盖类型的定量描述。

Ten secondary metabolites in phloem of different strains of poplars were extracted by different chemical methods and their contents were determined.

摘要通过不同化学方法提取并分析了不同品系杨树韧皮部10种次生代谢产物的含量及含量差别，研究了不同制样方法对单宁、酚类及酚酸产物含量提取结果的影响。

Based on the precise measurement of the surface topography of an artificial granite joint by employing a 3-D photogram metric instrument,a series of rock joints with different sizes were extracted from the artificial granite joint and the value of their fractal description parameters was calculated for the purpose of research on the scale effect on 3-D surface topography of the rock joint.

采用人工张裂法制备了花岗岩结构面，在精确测试其三维表面形貌的基础上，从中选取一系列不同尺寸的结构面并分别计算其三维表面形貌的定量描述参数值，以研究岩体结构面三维表面形貌的尺寸效应。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失