The principle and method of preparation of mixture gas by pressure measure method are mainly presented, and the control method of various errors in preparation is analyzed.
主要介绍了测压法配制混合气的原理、方法，并分析了配制过程中各项误差的控制。
The design principle of this aperture elongation method, and preparation and standardization of samples are introduced.
介绍了设计孔径伸长率法的基本原理和其试样的制备及标准化。
The preparation principle and method of pumping concrete are introduced, the technology measure to prevent and solve the accident are put forward.
文章介绍了泵送混凝土的配制原则和操作方法，提出了防止和解决发生事故的技术措施。
In this paper, technical principle on preparation of metal mould by casting method of electroslag smelting and application prospect is described.
本文简述了用电渣熔炼浇铸法制备金属模具的工艺原理和该方法的应用前景。
The structure, preparation method and forming principle of liposome are introduced. Its application in cosmetics and the attention in dispensation are summarized.
介绍了脂质体的结构、制备方法、形成原理以及脂质体化妆品的作用和配方时的注意事项。
A review of preparation principle of gel and sol and preparation method of silica sol and application of gel and sol technique on textiles is surveyed.
综述了溶胶凝胶的制备原理及硅溶胶的制备方法，概述了目前溶胶凝胶技术在纺织品上的应用情况。
The electromagnetic shielding principle of the conductive coating, formulation and preparation, application method and performance results were described.
本文叙述了导电涂层电磁屏蔽的基本原理、涂料的组成和制备、施工方法和性能测试结果。
It also describes the principle of the making of enterprise norms, norm system, method and procedures as well as computerization in calculation of norm preparation and management.
阐述了编制企业定额的原则、体系、方法与步骤，以及企业定额编制与管理的电算化。
The working principle, the structure and the constitution of the rotation ring for the artificial abortion apparatus are introduced. The preparation method of the rotation ring is discussed.
介绍旋动式人工流产器的工作原理、结构及组成，探讨旋流环的制备方法。
In this paper, the technological process, characters and principle of preparation of Mn-Zn soft magnetic ferrite by direct-method were introduced.
介绍了直接法制备锰锌软磁铁氧体材料的工艺流程、特点及原理。
The principle, process, influence factors, advantages and disadvantages of dry air exsiccation in flowing gas evaporation method and the preparation of dry air are introduced mainly.
对各种方法进行了比较，干空气干燥法是干燥燃气管道最适合的方法。
Modules are established during the pre-course preparation. In the teaching process, the principle of "practice-theory-further practice" is followed and theme teaching method applied.
在备课过程中建立模块备课体系，在教学过程中遵循“实践—理论—再实践”的原则，实施主题授课法。
A new iodine agent was developed by the microencapsulation of potassium iodide. The principle of preparation, experimental method and feature of the product had been described.
开发了一种新型的加碘剂-微胶囊碘剂，介绍了它的制备原理、方法与特点，具有稳定性好、加工成本低、碘剂使用效率高等优越性。
The advances in the preparation ofnano-thin films by sol-gel method as well as its principle and characteristics are briefly reviewed. At the end of this paper, existing problems are also pointed out.
综述了溶胶-凝胶法制备纳米薄膜的原理与特点及其最新研究进展，最后指出了溶胶-凝胶法制备纳米薄膜今后急需解决的问题。
The principle of the discoid electrophoresis of polyacrylamide gel was explained. The composition and preparation method of gel separation column was introduced in detail.
介绍聚丙烯酰胺凝胶电泳法的电泳原理、凝胶分离柱的组成及其制备方法。
The principle and application of a new sample preparation method-solid-phase micro-extraction (SPME) are introduced in this paper.
介绍了一种新型样品制备法——固相做萃取(SPME)的原理及其应用。
The measurement technique of methane emissions from ruminant livestock ushg SF6tracer method was described, which included the basic principle, instrument preparation and the experiment condition.
详细描述了用六氟化硫示踪法测定反刍动物甲烷排放的技术，包括基本原理、仪器准备和测试条件。
The measurement technique of methane emissions from ruminant livestock ushg SF6tracer method was described, which included the basic principle, instrument preparation and the experiment condition.
详细描述了用六氟化硫示踪法测定反刍动物甲烷排放的技术，包括基本原理、仪器准备和测试条件。
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