There are reactor coolant system weld issues, they're used and they're getting primary water stress corrosion cracking.
还有反应堆冷却剂系统焊接问题，它们使用了并且得到原生水,应力腐蚀裂痕。
It is concluded that the local tensile stress created during quenching process and the stress concentration due to sharp V-shaped notch are the primary reasons of cracking.
认为，淬火过程中产生的局部拉应力加上尖锐V型槽口引起的应力集中是造成开裂的主要原因。
DCC catalyst consists of a modified mesopore zeolite with pentasil structure for primary product of naphtha range to undergo secondary cracking for producing light olefins.
催化裂解催化剂是一个含改性五元环中孔沸石的固体酸催化剂，汽油一次产物在中孔沸石内进行二次裂化转化为轻烯烃。
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