The success of excavation of a protection layer once a tire wilt play a quite important role in economic fund and shortening time limited for the project.
保护层一次开挖爆破的成功，对节省资金，缩短工期起到了重要的作用。 通过对地下工程开挖爆破进行研究，得出了预裂及光爆在地下工程开挖中的使用方法。
参考来源 - 龙首水电站开挖爆破试验研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Coating: granule, pill protection layer, pigmentation, controlled release, film, or bowels solved coating.
包衣：颗粒、丸剂保护层、着色、缓释、薄膜、肠溶包衣等。
Hardware encryption has high security because this method can relieve burden of MPU and has physical protection layer.
硬件加密可减轻微处理器的负担，且具有物理保护，安全性较高。
The feasibility of realization of AWJ with gas protection layer in submerged water is confirmed by computational example.
通过算例论证了淹没环境下，实现气体保护层磨料水射流的可行性。
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