In this paper, we raise really available measures through the investigation, analysis, test and research about the stress corrosion cracking of pressure vessel for ammonia refrigerating equipments.
通过对氨制冷压力容器应力腐蚀开裂进行调查、分析、试验和研究，提出切实可行的对策措施。
The engineering geological feature of the swelling soil and the cause of slip are exposed through detailed investigation and test study.
通过详细勘察及试验研究，查明了引起病害的特殊土——膨胀土的工程地质特征及其病害机理，提出治理措施并初见成效。
Through kept sample common temperature investigation and accelerated test investigation, validity may tentatively decide for 2 years;
经常温留样考察和加速试验考察，有效期可暂定为2年；
Through years of survey and investigation of plot test and high-yielding cultivation, the grain number and spike of wheat were studied.
通过多年的小区高产栽培试验和高产攻关，对小麦的穗数、穗粒数进行了研究。
Through years of survey and investigation of plot test and high-yielding cultivation, the grain number and spike of wheat were studied.
通过多年的小区高产栽培试验和高产攻关，对小麦的穗数、穗粒数进行了研究。
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