The solid fuel pellet (a ceramic oxide matrix) is the first barrier that retains many of the radioactive fission products produced by the fission process.
固体的燃料弹（陶式氧化物母体）是第一道防护，隔开裂变过程中产生的裂变放射。
Objective: To study the significance of early changes of nitric oxide level in brain tissue and the permeability of blood brain barrier after mechanical injury in brainstem.
目的：探讨机械性脑干损伤早期脑组织中一氧化氮含量和血脑屏障通透性的改变及其意义。
Silicon oxide ion barrier film was successfully fabricated on the input-face of microchannel plate by magnetron sputtering method.
本文利用射频磁控溅射方法，在微通道板输入面上成功地制备出二氧化硅防离子反馈膜。
A preparation method of anodic aluminum oxide film with thick barrier layer is provided, which belongs to the field of material technology.
一种属于材料技术领域的具有厚阻挡层的阳极氧化铝薄膜的制备方法。
A preparation method of anodic aluminum oxide film with thick barrier layer is provided, which belongs to the field of material technology.
一种属于材料技术领域的具有厚阻挡层的阳极氧化铝薄膜的制备方法。
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