关于石英晶振电气参数DLD解释如下：

DLD stands for Drive Level Dependence. The frequency and ESR (Equivalent Series Resistance) of a quartz crystal can be influenced by the drive level applied in an oscillation circuit to various degrees. Good crystal designs can minimize the effects on frequencies and ESR of crystals from varying drive levels.

DLD表示驱动电平依赖性，石英晶振的频率和ESR(等效串联电阻)受振荡电路中驱动电平的不同程度的影响。良好的石英晶振设计可以限度地减小不同驱动电平对晶体频率和ESR的影响。

In order to ensure the quality of crystals, Genuway measures ESR and frequencies at different drive levels in production at minimum. From the measurement data, Genuway applies a stringent set of test criteria to screen out crystals with large variation in frequencies and ESR across the drive levels as well as the crystals which may meet the specifications at certain drivel levels but not others.

为了保证石英晶振的质量，晶诺威测量了不同驱动级的ESR和频率，从测量数据中，晶诺威采用了一套严格的测试标准来筛选出频率和ESR在驱动水平上有很大变化的石英晶振，以及在某些水平上可能满足一些指定规格要求的石英晶振产品。