Acoustic-emission techniques have been used to determine the rate of cracking of high strength steel due to hydrogen embrittlement.

声发射技术已被用来确定高强钢因氢脆而开裂的速率。

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The paper describes that new type inject steam technology can reduce coke precursor, resulting in operation rate of cracking furnace over 96.8 % .

采用新型注汽技术改造，降低结焦先兆物，使裂解炉开工率提高到96.8％以上。

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Based on the ration experiment and practical engineering of DFRC concrete, this kind of application can reduce the rate of concrete cracking and increase the strength against momentum.

通过对杜拉纤维混凝土配合比试验和工程实践证明，在混凝土中掺加杜拉纤维后，可以减少混凝土的裂缝，而且有效提高抗冲能力。

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The 58-year-old manufacturer produces a device that can stuff cereal boxes at the rate of 5, 000 boxes an hour without cracking a single cornflake.

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