nail beds造句

• My nail beds suck
  我的甲床太烂了
• It could lead to the narrower space between the connections on the pcb and the closer distance between the test points, and it could even make some test points inaccessible . so, the traditional test methods based on probes or nails beds are no longer available
  同时，数字系统中可供测试的结点间距亦越来越小，有的甚至成为隐性的不可达结点,使得基于探针的传统测试方法将难堪重任。