...试密度,当焊盘较小时,测试针会压在Coverlay上,造成假开路;2)万用测试机(Universal Tester),使用万用针床(Bed of Nail),也需要制作夹具,但此种测试能针对Pattern Shift作出改善,所以测试密度较专用测试机大大提高,但此测试机价钱较贵(如ATG,L&...
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Bed-of-Nail Testing 针床测试
epidermal cysts of nail bed 甲床表皮囊肿
debridement of nail bed 甲床清创术
veins of nail bed 甲床静脉
lengthening of nail-bed 甲床扩大术
Some patients develop white ridges or bands of discoloration along the nails or develop a darkening of the nail bed .
部分患者的指甲上会出现白色的棱线,或在指甲周围出现变色,或甲床发暗。
The NAPSI score evaluates presence of signs on the nail bed... and on the nail matrix... in all 20 nails, providing a maximum score of 80.
银屑病甲严重指数评估了甲床的存在程度…在指甲母体上…所有20个指甲中提供了最高分80。
A nail that lifts up out of the nail bed can also indicate kidney or thyroid issues, says Derick.
德里克还说,指甲从甲床上脱出说明人体患有肾病或甲状腺疾病。
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