1. Subject-Verb Agreement Errors The subject and verb of a sentence must agree with one another in number whether they are singular or plural. If the subject of the sentence is singular, its verb must also be singular; and if the subject is plural, the verb must also be plural. 2. Sentence Fragments Sentence fragments are incomplete sentences that don’t have one independent clause. A fragment may lack a subject, a complete verb, or both. Sometimes fragments depend on the proceeding sentence to give it meaning. 3. Missing Comma After Introductory Element A comma should be used after an introductory word, phrase, or clause. This gives the reader a slight pause after an introductory element and often can help avoid confusion. 4. No Comma In A Compound Sentence A comma separates two or more independent clauses in a compound sentence separated by a conjunction. The comma goes after the first clause and before the coordinating conjunction that separates the clauses.
The material removal processes are a family of shaping operations in which excess material is removed from a starting work part so that what remains is the desired final geometry. The ‘‘family tree’’ is shown in Figure 1. Machining is a manufacturing process in which a sharp cutting tool is used to cut away material to leave the desired part shape. The predominant cutting action in machining involves shear deformation of the work material to form a chip; as the chip is removed, a new surface is exposed. Machining is most frequently applied to shape metals.
This is an excellent textbook for an advance high school/ undergrad who is comfortable with vector algebra/calculus. It’s been used in the Berkeley Honors Intro Physics Course H7A for ages, and has done well in preparing many young physicists for hate rigorous mathematics of their following coursework.