“occupational hazards during the construction and operation in railways”的概念、定义、翻译、参考文献-科学参考

单词	occupational hazards during the construction and operation in railways
释义	occupational hazards during the construction and operation in railways Encyclopedia 工学〔铁路职业安全与健康〕释 occupational hazards during the construction and operation in railways铁路职业病危害铁路施工期和运营期职业活动中产生和（或）存在的可能对职业人群健康造成的不良影响。
随便看	density of mass density of mass, mass density density of needles on a needle board density of pinning force density of potential energy in tensile strain density of probability density of quality hydrogen storage density of real number system density of representative points density of rocks density of searching density of signed measure density of single quasi-partical states density of single quasipartical states density of single quasi particle states density of single quasi-particle states density of state density of states density of states, DOS density of the thinnest lattice sphere coverings density of the thinnest sphere covering density of volumetric hydrogen storage density operator density parameter density peak

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