英文
高中

第四段第二行的pack是什麼意思?
解答寫「電池」但是我查不到pack有這個意思

第31至35 題為題組 Since the early 1990s, the hihilin zion battery has been the most suitable battery for portation to y 31 electronic equipment. Today, they're commonly used for cellphones, computers, tablets, digital cameras, and other devices. Lithium-ion batteries have nearly twice the energy density of traditional nicket cadmium batteries. 31 This feature has important implications for cellphones and computers, because it makes these items more portable for consumers. It also makes power tools easier to use and allows workers to use them for longer periods of time, 32. 32 Lithium-ion batteries retain retain mo naman of their power capacity from previous charging cycles. Thus they require no scheduled cycling and can be fully re-fueled to their maximum capacity during each charging cycle. Other rechargeable battery types, in contrast, retain information from previous charging cycles, which wastes valuable storage space. Over time, this makes these rechargeable batteries hold less of a charge. 33 It is fragile and requires a protection circuit to maintain safe operation. A high load could overheat the pack and safety might be jeopardized. 34 F After 2-3 years of use, the pack often becomes unserviceable due to a large voltage drop caused by high internal resistance. It should be noted, however, that manufacturers are constantly making improvements on lithium-ion batteries. 35 With such rapid progress, the use of lithium-ion batteries will certainly expand further. (A (A) The lithium-ion battery is also a low maintenance battery. (B) Despite its overall advantages, the lithium-ion battery has its drawbacks. (C) New and enhanced chemical combinations are introduced every six months or so. (D) Attempts to develop rechargeable lithium-ion batteries failed due to memory problems. (E) That is, they carry more power in a smaller unit, helping to reduce overall weight and size. d (F). Another downside is the increase of the internal resistance that occurs with cycling and aging. -3-

解答

✨ 最佳解答 ✨

pack是 battery pack的簡寫。中文是 電池包,通常指的是鋰電池(3C用品常用的電池)。

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