bad top是什么意思

用法例句

Surgical management for traumatic instability of upper cervical spine;

创伤性上颈椎不稳的手术治疗策略

Effect and Operation Strategy for Posterior C_(1、2) Transarticular Screw Fixation for Atlantoaxial Trauma or Instability;

经C_(1、2)关节突螺钉治疗寰枢椎创伤和不稳的疗效及手术策略

The main cause of unstable combustion of No.

武汉钢电股份有限公司2#锅炉燃烧不稳主要是因为一次风的出口刚性不一致,造成偏斜和火焰扩散,破坏燃烧切圆造成的。

Curative Observation on Treatment of Unstable Angina with Isosorbide Dinitrate;

异舒吉治疗不稳定型心绞痛90例疗效观察

PID control for unstable process with time delay based on internal model control;

基于IMC的不稳定时滞过程PID控制

The top coal of 4302 rail roadway in Xuchang mine is soft and broken,with a big thickness of its unstable layer and well developed fractures,making it very easy to have a roof falling in the process of roadway excavation.

针对许厂煤矿4302轨巷顶煤裂隙发育、松软破碎、不稳定层厚度大,掘进过程中极易冒落等特点,提出"减小空顶距离+减小空顶时间+提高临时支护初撑力+预应力锚索支护"的支护技术对策;并据此制定了减小循环进尺,强有力的临时支护,左旋高性能预应力螺纹钢锚杆,以及小孔径短锚索加强支护控制顶板的支护方案;采用数值模拟方法比较了新旧支护方案的围岩控制情况。

Based on self-developed image-based laser measurement system for instantaneous concentration field, overcoming the difficulties of measuring instantaneous concentration fields, the unsteady two-phase flow around a cylinder is investigated to obtain the concentration time series.

克服瞬时浓度场测量的困难,利用自行研制的瞬时浓度场激光图像测量系统,对绕圆柱不稳定两相流动进行实验测量,获得了浓度场时间序列,并发展了一种浓度场信息熵计算方法,得到了浓度场信息熵时间序列,最后对这些时间序列进行了关联维数(系统复杂度的估计)、Kolmogorov熵(动力系统的混沌水平)和Lyapunov指数(系统稳定性的特征指数)等非线性分析。

These curves demonstrate clearly the process from transient flow to the steady flow.

　本文在内、外边界定压的条件下得到了平面单向流和平面径向流两种渗流形式在拉氏空间的解析解,利用Ste hfest数值反演方法给出了地层各点的压力分布曲线,由这些曲线可以清楚地看到流体的流动由不稳态流向稳态流过渡以及最后达到稳态流的过程。

Preliminary study on treating patellar instability guided by arthroscopy;

关节镜指导下治疗髌骨不稳定的初步探讨

The instability of strategic alliance: previous research and direction of future research;

战略联盟不稳定性的研究现状与展望

Numerical simulation of a torrential rain in the northeast of Huaihe basin part Ⅱ: Instability conditions and the mechanism of intensification and maintenance.;

淮河流域东北部一次异常特大暴雨的数值模拟研究Ⅱ:不稳定条件及其增强和维持机制分析

It is clarified that there exists an unstable arch in top coal and overburden and an unsymmetrical subsidence deviating to the roof.

采用相似材料模拟实验研究方法 ,对急斜特厚煤层水平分段放顶煤开采上位顶煤与采场上覆岩层运动与破坏规律以及地表变形进行了系统的研究 ,阐明了上位顶煤与采场上覆岩层存在不稳定拱和地表向顶板方向偏移的非对称性下沉。