//设置手机软件 public void SetHandsetSoft(HandsetSoft soft) => this.soft = soft;
protected HandsetBrand(HandsetSoft handsetSoft) { this.HandsetSoft = handsetSoft; }
public HandsetBrandN(HandsetSoft handsetSoft) : base(handsetSoft) { }
public void SetHandsetSoft(HandsetSoft soft) { Soft = soft; }