固定短语结构-上海海事大学信息工程学院.PPT

上海海事大学信息工程学院 Grammar-As的用法 4、固定短语结构 The major applications of RF/microwave signals are categorized as follows: communication, radar, navigation, remote sensing, domestic and industrial applications, and medical applications. As for as the principle of the conservation of energy is concerted, it is one of the general principles that underlie all natural process. 其他常见的固定短语有：as a matter of fact, as a result (of ), as a whole, as a rule, as for/to, as regards, so as to etc. 上海海事大学信息工程学院 常用写作句型 ……保持不变 ……remain (stay) (s) unaltered (constant, unchanged, fixed, the same). ……is (are) kept (held, maintained, left) unaltered (constant, unchanged, fixed, the same). 与 ……成反比 be inversely proportional to vary inversely with depend inversely as 上海海事大学信息工程学院 常用写作句型 ……与……相一致 the result obtained agrees with (is in agreement with, is in line with, is consistent with, fits into) the computer simulation. ……体积小（质量好，重量轻，价格低） ……small in size (good in quality, light in weight, low in price) 输入可用……表示 The input can be represented (expressed, given, denoted) by …… 句子翻译练习 运算放大器的闭环增益可用公式1表示，其中A表示开环增益，F表示反馈系数。由此可得，闭环增益与开环增益成正比，与反馈系数成反比。这与一般反馈系统的环路增益分析结果是一致的。 电磁波传播速度反比于它传播经过的介质密度。 上海海事大学信息工程学院 句子翻译练习 天线效率是指天线的辐射功率与辐射功率和损耗功率之和的比值，或者天线的辐射功率与总输入功率的比值。 上海海事大学信息工程学院 句子翻译练习 Inductive charging?(also known as?wireless charging) uses an?electromagnetic field?to transfer energy between two objects through?electromagnetic induction. This is usually done with a?charging station. Energy is sent through an?inductive coupling?to an electrical device, which can then use that energy to charge batteries or run the device. Induction chargers use an induction coil to create an alternating electromagnetic field from within a charging base, and a second induction coil in the portable device takes power from the electromagnetic field and converts it back into electric current to charge the battery. The two induction coils in proximity combine to form an electrical?transformer. Greater distances between sender and