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.
A digraph is when more than one letter have a single sound...like /ea/ in bread or /ch/ in chat. Digraphs can come at the front, middle, or end of word and can be consonants o â¦ r vowels. Some examples are 2  â¦. Digraph List for English Words The term digraph is part of phonetics in English and stands for the sound, called a phoneme, which occurs when two consonants are combined.