The variety of shielding gases used in arc welding can be a confusing topic. However, the use of an external shielding gas is a necessary component for some processes, as it is a requirement for surrounding and protecting the arc and molten weld metal from contamination by the atmosphere.
Consonant Digraphs. Second Grade. Spelling/Phonics. Consonant Digraphs Consonant digraphs are two (or three) letters that come together to make one sound. The difference between blends and digraphs is that blends are two letters that make two sounds and digraphs make one sound.onsonant Digraphs. Second Grade. Spelling/Phonics. Consonant Digraphs Consonant digraphs are two (or three) letters that come together to make one sound. The difference between blends and digraphs is that blends are two letters that make two sounds and digraphs make one sound.
In phonetics, a plosive consonant also known as an oral stop is a consonant that is made by blocking a part of the mouth so that no air can pass through, and the pressure increases behind the place where it is blocked, and when the air is allowed to pass through again, this sound is created.he following plosives with symbols in the IPA. [ 1 p] voiceless bilabial plosive. [ 2 t] voiceless alveolar plosive. [ 3 Ê] voiceless retroflex plosive. [ 4 c] voiceless palatal plosive. [ 5 k] voiceless velar plosive. [ 6 q] voiceless uvular plosive. [ 7 Ê¡] epiglottal plosive.