It is showed from experiment that Cr and As should be separately controlled less than 0.06 and 0.03 percent to get stable ferrite base,some improving measures proposed for abnormity of Cr and As.
实验结果表明:为稳定获得铁素体基体的球墨铸铁管应控制Cr<0.06%、As<0.03%,提出了Cr、As异常时退火工艺的改进措施。
参考来源 - Cr、As对水冷金属型离心铸造球墨铸铁管金相组织的影响To fu1ly reveal the water abnormity and its formative causes in Dongting Lake during recent decades, this paper takes Dongting Lake as a big system.
为全面揭示洞庭湖近数十年的水情异常与成因，将湖区视作一个大系统来研究。
参考来源 - 期刊学术社区·2,447,543篇论文数据，部分数据来源于NoteExpress
Stop the pump to check if there is any abnormity noise or vibration during operation.
在运转中，如发现有异常声响和振动时，应立即停车。
The observation on chromosome aneuploid and chromosome abnormity in ranunculus sceleratus l.
石龙芮染色体非整倍性和染色体异常的观察。
Comprehensive curve pattern, attenuation coefficient and the relationship of plane position and geological abnormity had been conducted.
研究了综合曲线的形态、衰减系数大小，平面位置与地质异常体的类型定性关系。
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