The histological research of male bai zhi showed that it had severe lignified while the tissues secereting the volatile oil and the coumarin ( secretory cavity ) were very little . the results of extractive test also showed that the principle constituent of male bai zhi was lower than the common evidently 公白芷的组织研究表明其木化程度高，而与挥发油和香豆素类成分密切相关的组织(分泌腔)又较少，白芷浸出物含量测定的结果也表明，公白芷中有效成分的含量明显低于一般白芷。
To explore why the ratio of collectable wort extract is higher than that of non - extruded , the influences of all parameters of rice extrusion system ( barrel temperature , material moisture , screw speed ) on resistant starch content of extuded rice were studied by using second - order quadratic orthogonal rotating combination design method 摘要为探索挤压蒸煮大米啤酒辅料麦汁浸出物收得率高于传统不挤压蒸煮啤酒辅料收得率的原因，用二次正交旋转组合试验法设计安排试验，研究了大米挤压蒸煮系统诸参数（套筒温度、物料含水量、螺杆转速）对大米抗性淀粉含量的影响规律。
As for chemical and medical laboratory , chemical corrosion - resistant function should be considered first since the overall work environment , including spills , corrosive reagent & solvents and overses & other improper handlings , etc . , may do a certain harm to the furniture , which requires that our furniture should be firm and enduring 对于化学、医学实验室而言，耐化学腐蚀是首先要考虑的功能，其整体的工作环境对于其内的家具有一定的损害性，如各种溅出物、腐蚀性试剂及溶剂、超负荷使用及其他不当使用等，这就要求我们的实验室家具必须坚固耐用。
Abstract : based on the relationship between the properties of rare earth material and the physical characteristics of rare earth products , it can be considered that the control of physical characteristics of rare earth products will take an important role in the future rare earth industry development . it was suggested that the physical property control technical research must be included in the development project of rare earth industry . furthermore , some problems about the exploitation of new product were discussed 文摘:本文讨论了稀土材料性能与稀土产品物性间的相关关系，认为稀土产品的物性控制对于发展未来稀土产业将起重要作用，因此建议在现阶段的稀土产业的发展计划中应当体现出物性控制的攻关目标，并就当前国内稀土新产品开发中的问题和大家关注的热点作了相应的介绍。
Radix angelicae dahuricae of different commodity , different producing areas , different harvest time and different processing methods have been detected the chief constituent . the results showed that the content of the volatile oil and ethanol - soluble extractive mostly lied on the factors of producing areas , different harvest time and different processing methods , and so on 考查了不同商品、不同产地、不同采收时间以及不同加工方法等对白芷中有效成分含量的影响。结果表明：白芷醇溶性浸出物的含量、挥发油含量与成分受产地、采收时间、加工方法等因素的影响差异较大。
