They are known as vertical Block lines (or VBL's).

称为垂直布洛赫线（或VBL）。

Low dose VBL could inhibit migration and tubular morphogenesis of ECV-304 cells in vitro.

低浓度VBL能有效抑制ECV-304细胞的迁移及管样结构生成。

A recent meta-analysis has shown VBL to have lower bleeding rates, with no difference in survival.

最近一项总结分析表明：VBL可降低曲张静脉的出血率，但不能改变患者的生存率。

VBL remains the only alternative in patients intolerant of carvedilol or those unlikely to comply with drug therapy.

VBL仍然是不能耐受卡维地洛或不愿接受药物治疗患者的唯一选择。

All patients in the carvedilol group who discontinued therapy due to side effects were changed to VBL , and none have bled.

卡维地洛组中所有因副作用而中断治疗的患者均转为用VBL治疗，而且无一例出血。

Since Mexico placed the first export order for the M11 in 1985, the VBL has enjoyed moderate success on the international market.

自从墨西哥于1985年授予首份M11轮式侦察车的出口订单，轮式侦察机已在国际市场上享有一定的成功。