make vague or obscure or make (an image) less visible
lessen in force or effect
双语例句
The motion at this time scale is clearly dominated by the lightly damped phugoid. 采用这种时间尺度时,运动显然由小阻尼的沉浮模态所决定。
Express the differences of displacement variation of a mass subjected by a free damped vibration and a forced vibration, separately. 分别叙述一质量受到无阻尼的振动与强制振动时位移变化的不同。