safe-depth 安全水深
mining safe depth 安全深度
maximum safe depth 最大安全深度
safe-mining depth 安全开采深度
safe water-cushion depth 安全水垫深度
safe water depth 安全水深
safe mining depth 安全开采深度
safe stoping depth 安全开采深度
Objective To provide safe depth and direction of need ling for clinical physicians.
目的：为临床医生提供安全的进针深度和角度的参考数值。
Professor Bushberg says removing the topsoil might make the land safe for use. But it depends on the depth of the radioactive material.
布希柏格教授说，移除表层土壤可以保证土地的使用安全，但这取决于放射性物质渗入的深度。
However, the experts warned the results were worrying and called for in-depth studies to determine whether or not multivitamins are safe.
但专家警告，这些研究结果令人担忧，并呼吁进行深入研究以确定服用复合维生素是否安全。
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