The acoustic modal analysis of cavity is the important matter on vehicle NVH performance study. Identifying system mode is of importance to avoid acoustic resonance and reduce interior noise.
车室声学模态分析是汽车NVH特性研究的重要内容，识别系统模态对避免声学共振、降低车内噪声有重要意义。
A test bed for the performance study of Marine diesel engine exhaust silencers was designed and built.
设计并建造了一种用于船用柴油机排气消声器声学和气动性能试验研究的台架。
Therefore the preparation technology and performance study of solid lubricating materials were of great significance.
因此固体自润滑材料的制备工艺与性能研究具有非常重要的意义。
The preparation and performance study of nanomaterials based on physics and chemistry are the foundation of the whole nanotechnology.
其中，以物理和化学为理论基础的纳米材料的制备和性能研究是整个纳米科技的基础。
Optimization results show the necessity and feasibility of rational transformation and maintenance based on performance study of units.
优化结果表明：通过对机组的特性研究，进行合理的改造、维护是非常必要的，而且是可行的。
This model provides the theoretical basis for the thermal performance study and optimum design of perforated multilayer insulation material.
该模型为多层打孔隔热材料热结构性能研究以及优化设计提供了理论基础。
Veugelers, MSc, PhD of the University of Alberta, researchers surveyed around 5000 Canadian fifth grade students and their parents as part of the Children's Lifestyle and School-Performance Study.
Veugelers领导，研究者们调查了约5000名加拿大5年级学生及他们的家长作为儿童生活方式和学习成绩关系研究的一部分。
Veugelers, MSc, PhD of the University of Alberta, researchers surveyed around 5000 Canadian fifth grade students and their parents as part of the Children's Lifestyle and School-Performance Study.
Veugelers领导，研究者们调查了约5000名加拿大5年级学生及他们的家长作为儿童生活方式和学习成绩关系研究的一部分。
应用推荐