The bill aims to cut 2005 emissions levels by 17% by 2020 and has at its core a cap-and-trade system that calls for mandatory caps on greenhouse gas emissions.
这项法案意在到2020年之前将温室气体排放量从2005年水平上削减17%，而它的核心是cap - and - trade(排放限制与额度交易)体系，这个体系要求对温室气体排放施加强制性限额。
Shock eraser insert: thermoplastic rubber core inside a thermoplastic elastomer butt cap is pressure fit into the shaft to reduce frame shock and vibration.
减震插片：拍柄内置热塑性橡胶内核同热塑性弹性体，有效减少球拍震动。
The reef body, small in size and variety in type, is generally made up of reef base, reef core and reef cap.
礁体规模较小，形态多样，礁体一般由礁基、礁核和礁盖三部分组成。
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