Answer by Gavin Harrington. Confidence votes 4.0K. A bitch is a female canine. The same word is often used in reference to something unpleasant or difficult to do. E.g- We had to deliver twenty large crates to the top floor, and the lift was out-that job was a bitch.
After reading this article, the physician should be able to: 1  Proper equipment setup and positioning for UGCVC. 2  Ultrasound criteria for possible difficult UGCVC. 3  Procedural steps involved in locating, accessing and cannulating the internal jugular vein with ultrasound guidance.
Valves and seats will usually have the same angle to mate properly. That angle is usually 45 degrees, but 30 degrees can be found in many modern applications. The mating angle is often accompanied by top and bottom angle cuts that are 15 degrees deflection each side of the mating angle.