The color of an HB pencil lead is too light to be read by the machine.
HB的铅笔铅芯颜色较浅，不能涂机读卡。
Angular Distribution of Backscattered Light from Locally Pathological Tissues Irradiated by Pencil Light
线光束照射下局部病变组织背散射场角分布研究
英文例句大全为您提供light pencil英文例句大全,light pencil英文造句,关于light pencil的英语句子,单词light pencil怎么造句,light pencil英文例句大全有哪些,哪些英语句子是关于light pencil,英语单词light pencil的句子,单词light pencil如何造句,light pencil怎么造句等。