| 单词 | B |
| 释义 | B 1. Chess. bishop. 2. black. 3. Photog. bulb (def. 8). Symbol. 1. the second in order or in a series. 2. (sometimes l.c.) (in some grading systems) a grade or mark, as in school or college, indicating the quality of a student's work as good or better than average. 3. (sometimes l.c.) (in some school systems) a symbol designating the second semester of a school year. 4. Physiol. a major blood group usually enabling a person whose blood is of this type to donate blood to persons of type B or AB and to receive blood from persons of type O or B. Cf. ABO system. 5. Music. a. the seventh tone in the scale of C major or the second tone in the relative minor scale, A minor. b. a string, key, or pipe tuned to this tone. c. a written or printed note representing this tone. d. (in the fixed system of solmization) the seventh tone of the scale of C major, called ti. e. the tonality having B as the tonic note. 6. (sometimes l.c.) the medieval Roman numeral for 300. 7. Chem. boron. 8. a proportional shoe width size, narrower than C and wider than A. 9. a proportional brassiere cup size, smaller than C and larger than A. 10. Physics. See magnetic induction. 11. Elect. susceptance. 12. a designation for a motion picture made on a low budget and meant as the secondary part of a double feature. 13. a quality rating for a corporate or municipal bond, lower than BB and higher than CCC. |
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