The paper introduced briefly produce quality control in pressure vessel′s shell and manhole nozzle welding, how avoided crack and found defect by ultrasonic testing after welding.
介绍了压力容器人孔接管与厚壁筒体相焊时，如何控制产品的质量，避免产生裂纹，焊后通过超声波检测及时发现缺陷。
He avoided stepping on the crack in the sidewalk.
他避免踩到人行道的裂缝上。
For downstream of homogeneous DAMS, damages caused by rain scouring, storm, ice, stream, animal, swelling, and mud crack must be avoided.
均质坝下游护坡的作用是防止雨水冲刷，风浪、冰层和水流作用，动物、冻胀干裂等对坝坡的破坏。
The effect of these nonlinearities can be avoided by determining compliance at the same maximum load for all crack lengths investigated.
这些非线性效应，可在测定所有裂纹长度的柔度方法时，采用最大载荷不变的方法予以消除。
Mechanism of reheat embrittlement and reheat crack is the same. Reheat embrittlement cannot be avoided by reducing stress.
再热裂纹与再热脆化的机理相同，两者同时发生，降低应力防止再热裂纹并不能防止再热脆化。
As for the circular crack, the influences of the adjacent bars on the measured results can be avoided by obliquely setting two transducers across the crack.
对于环向裂缝，用两换能器的连线斜跨环向裂缝的布置方法可以基本消除钢筋的影响。
It can be avoided all kinds of crack, improved the wood quality and operated easily.
此基准基本可以避免铁木干燥过程中的各种开裂现象，提高了干燥质量，而且操作方便。
It can be avoided all kinds of crack, improved the wood quality and operated easily.
此基准基本可以避免铁木干燥过程中的各种开裂现象，提高了干燥质量，而且操作方便。
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