这个概念本身作为一项严肃的研究课题是太过不稳定和欠明了的。
Speech communities turn out to be too fluid and ill-defined to be seriously studied in their own right.
提出了一种能够自产生基准电压和偏置电流，并且锁定阈值电压和迟滞量稳定的新型欠压锁定电路。
A novel under-voltage lockout circuit is proposed which could generate reference voltage and bias current itself, and could stabilize lockout threshold voltage and hysteresis quality.
倒立摆系统是一种典型的非线性欠驱动复杂难控系统，对倒立摆的研究可归结为对非线性多变量、欠驱动、绝对不稳定系统的研究。
The study of this kind of problem can be treated as the study of multivariable, nonlinear, under-actuated and absolutely unstable system.
粘稠泡沫在对付大量水侵和有效改进岩屑携带能力方面的稳定性，进一步促进了欠平衡泡沫钻井的应用。
The stability of viscous foam in dealing with large water invasion and effectively improving solids carrying capacity further promotes the application of underbalanced foam drilling.
在暴雨工况下，滑坡h3的稳定性系数略小于1.05，处于欠稳定状态，滑坡h 4处于基本稳定状态，而滑坡h5仍然处于稳定状态。
Under rainstorm state, stability coefficient of landslide H3 is slightly less than 1.05 and therefore it is under metastable state. In addition, landslides H4 and H5 are under stable state.
本研究报道了界面带电、浓度效应、阴离子共吸附对铜在金（ 100 ）表面的欠电位沉积层的稳定性所造成的影响。
We report here on the influence of surface electrification, concentration effects, and anion co-adsorption on the stability of the copper underpotential deposition layer on the gold (100) surface.
该系统能有效地避免磨机发生胀肚和欠载现象的发生，稳定和提高磨机的各项工作指标，保证控制系统的合理性和经济性。
This scheme can effectively avoid the occurrence of over-load and under-load of the mill, maintain all work index of the mill, and ensure the control system to be reasonable and economical.
在超欠挖严重的情况下，对隧道的稳定性，尤其是软岩隧道会产生一定的影响。
Tunnel stability, especially in soft rock tunnel, will be affected to certain degree for the enormous over-break or under-break of excavation.
提出了构造压力方程的反欠松弛方法，该方法建立了稳定和加速计算收敛的一般途径。
An interval relaxation method to solve system of nonlinear equations is discussed in this paper.
提出了构造压力方程的反欠松弛方法，该方法建立了稳定和加速计算收敛的一般途径。
An interval relaxation method to solve system of nonlinear equations is discussed in this paper.
应用推荐