一旦你感染了幽门螺杆菌，它会在你的胃里长期存在，而只造成较小的炎症。
Once you have been infected with H. pylori, the bacteria tends to cause a long period of low-grade inflammation in the stomach.
幽门螺杆菌的感染通常是长期存在的。
但是，材料缺陷、气候环境对金属元件的腐蚀、长期服役及复杂的受力情况等因素都会对锚固螺杆的健康状况产生很大的负面影响。
Their health are very important. How ever, some factor such as material defects, metal corrosion, long time service and complex force status etc, can impact the heath status.
目前，工程上一般采用超声无损检测技术对锚固螺杆进行健康检测，主要是检测经过长期服役后在其内部产生的裂纹或缺陷。
At present, ultrasonic non-destructive testing is usually used in health detection of anchor screws, and it mainly used in detecting inner defect of anchor screws under long term service.
目前，工程上一般采用超声无损检测技术对锚固螺杆进行健康检测，主要是检测经过长期服役后在其内部产生的裂纹或缺陷。
At present, ultrasonic non-destructive testing is usually used in health detection of anchor screws, and it mainly used in detecting inner defect of anchor screws under long term service.
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