物理状态：单斜晶，优等品为无色透明体，一等品为无色或带淡黄色晶体。
Physical : features : monoclinic, lolorless for excellent, lolorless or light yellow crystal for first grade.
他连日常必需晶都没有，更谈不上什么奢侈品。
He cannot afford the ordinary comforts of life, not to speak of luxuries.
作为目前广泛使用的耗时长的固体贴装预制件的代替品，一种用电镀共沉积得到的金锡合金共晶焊料被用于该项研究中。
As an alternative to the time-consuming solder pre-forms and pastes currently used, a co-electroplating method of eutectic au-sn alloy was used in this study.
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