在最近十年期间，无损检测日趋复杂，且已成为行业的强制性工具。
Within the last decade, nondestructive testing (NDT) in all its increased complexity has become a mandatory tool of industry.
尽管当前的企业工具使用集中轮辐模型，但这并不是强制性的要求。
Although the current crop of enterprise tools use the central hub-and-spoke model, this is not a strict requirement.
推荐的关闭程序：用戴手套的手紧紧地关闭阀门。推荐操作钢瓶阀门时总是戴手套。禁止用扳手或其它强制性的工具来操作阀门。
Recommended Closing Procedure: Close the cylinder valve tightly using a gloved hand. Always wearing gloves when operating cylinder valves. NEVER use wrenches or other persuaders to operate the valve.
应用推荐