In the photo in the middle, note that the dorsal fin has appeared on the surface while the blowholesare still open.
The pairedblowholes distinguish this animal as a baleen whale.
Note the single central head ridge, from just in front of the blowholes to near the tip of the snout.
Instead, the blowholes and a major portion of the back, including the dorsal fin, become visible almost simultaneously and remain visible for relatively long periods of time.
A fin whale in the North Atlantic with the paired blowholes open during respiration.
The two blowholes are widely separated, resulting in the projection of the blow upward as two distinct spouts.
Note the rather broad rounded appearance of the top of the head and the small head ridge, which extends from just in front of the blowholes to near the tip of the snout.
The blowholes are widely separated, and the blow emanating from them projects upward as two separate, distinct spouts.
In both the bowhead and the right whales, the projection of the blow upward from two widely separated blowholes assumes a very wide V-shape with two distinct columns, which may be seen when the animals are viewed from front or back.
But, because preventing blowholes increases the volume of the pipe, it is often better to allow them to form, but to control their position, so that they shall be deep-seated.
But deep-seated blowholes like those at B are relatively harmless in low-carbon easily welding steel, because the subsequent operation of forging or rolling usually obliterates them by welding their sides firmly together.
This enables it to take up enough silicon from the walls of the crucible to prevent the evolution of gas during solidification, and the consequent formation of blowholes or internal gas bubbles.
Blowholes may be lessened or even wholly prevented by adding to the molten metal shortly before it solidifies either silicon or aluminium, or both; even as little as 0.
If the plate is less than one-eighth of an inch thick the beveling is not necessary, as the edges may be melted all the way through without danger of leaving blowholes at any point.
Good cast iron breaks with a gray fracture, is free from blowholes or roughness, and is easily machined, drilled, etc.
In a former chapter I have partly described the head of a right whale, which has whalebone instead of teeth, with its blowholes on the back of the head.
While I was observing this phenomenal creature, two jets of steam and water sprang from its blowholes and rose to an altitude of forty meters, which settled for me its mode of breathing.
Look how high its blowholes are spouting all that air and steam!
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "blowholes" in a variety of sentences. We hope that you will now be able to make sentences using this word.
