A graph which shows this variation with time is called a waveform . 电压或电流随时间而变化的图形称为波形。
The pressure is monitored until no further variation with time is noted . 监测压力直到它不再随时间变化并记录下来。
The mechanical creep in photoelastic models is accompanied by a variation with time of the optical effects . 光弹性模型中的力学蠕变,伴随着光学效应随时间的变化。
Temperature effect is important in calculation theory of concrete filled steel tubular ( cfst ) arch bridge . the main problems about it are the temperature field in space and temperature variation with time 温度问题是钢管混凝土拱桥计算理论中的一个重要问题,其关键在于温度场时间和空间的变化与分布规律问题。