We used mice as material and studied the effects of poison of chromium and, the effects of protection of different concentrations of L-cysteine. We explored the fittest dose rate too.
本文以小白鼠为材料，研究了铬的毒害作用及不同浓度l -半胱氨酸的保护作用，探求最适剂量比。
Zinc acts as negative material of batteries, with the advantages of low equilibrium potential, good reversibility, high specific energy, rich resources, low cost, little poison and easy treatment.
锌作为电池负极材料，其优点有：平衡电位低、可逆性好、质量比能量和体积比能量高，而且锌资源丰富、价格低廉、毒性小、易处理。
Research in textile production, spinning and weaving and its poison in the ware, harmful material comes from the fiber raw material and process primarily medicine or help.
在纺织品领域的研究表明，纺织及其制品中的有毒、有害物质主要来自于纤维原料、加工药剂或助剂。
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