How can ultrasound check for cracks in metal?

The newly developed SONOSCAN angle probes of SONOTEC for non-destructive material testing check metals for cracks and inclusions. They are mainly used in the metal industry. The ultrasonic probes are able to detect critical defects as well as quality deficiencies of welds.

Explanation:

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answer; i believe its (ovulation);

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.