精度：gettimeofday 精度是固定在微秒级别上的。
Precision: gettimeofday precision is fixed to the microsecond.
由于它们应用于机床制造、两种设计制作仅在高精度的级别。
Due to their use in machine tool manufacture, both designs are produced only in high-precision grades.
实验结果表明，算法更合理地将水印嵌入在MPEG-4视频流中，水印容量得到较大提高，对恶意攻击的认证精度定位在块级别。
Through experiments the method can hide watermark in MPEG-4 video stream more rationally, the capacity of watermark increases greatly and the authentication precision locates in block level.
本文介绍德国的卫星定位与导航服务，及其按精度、时间响应和目的所分成的四个级别的服务。
The paper introduces the Germanic satellite positioning and navigation service. According to its precision, respond time, its purpose, it was divided into four-level service.
在不同级别背景噪声下，分别进行了有关信噪比、基本精度、抗噪能力以及系统对环境改变的适应性等实验。
Experiments were carried out at different levels of background noise for SNR, basic accuracy, noise-resistance and system environment adaptability.
如果说有什么你能做的，那就是尽量不要把你崭新的刀刃用在剪裁不需要这种级别精度的地方。
If you can help it, don't waste your brand-new tips on cuts that don't need that level of precision.
地质灾害危险性评估因建设项目评估级别不同，评估深度和精度也不同。
The depth and accuracy of assessment is quite different as assessment scale for in dangerous assessment of geological hazard constructive site is different.
铸铁平台精度：按国家标准计量检定规程执行，分别为0,1,2,3级四个级别。
The Cast Iron Surface Plate can be classified as Grade 0, 1, 2, 3, 4 according to the national standard metrological verification procedures.
井下压力测试资料统计分析证明，利用在地表上容易观测到的水位、水温资料计算出的井下压力，达到了与下井仪器相同级别的工程测量精度。
The analysis of data for pressure at the well bottom shows that the well pressure acquired through calculation by using the water level and water temperature which are easily observed on ground has...
井下压力测试资料统计分析证明，利用在地表上容易观测到的水位、水温资料计算出的井下压力，达到了与下井仪器相同级别的工程测量精度。
The analysis of data for pressure at the well bottom shows that the well pressure acquired through calculation by using the water level and water temperature which are easily observed on ground has...
应用推荐