n.上緊；固定；緊密

動詞tighten的現在分詞形式.

The tightening force required for gasketed connections is somewhat dependent on the washer material being used. 對于襯墊接頭，所要求的上緊的力量稍微依賴于正在使用的墊圈材料。

Beer contains herbs known as hops which are natural astringents that have beneficial tightening effect on the scalp. 啤酒含有所謂的富有收斂劑的蛇麻草，這有益于使頭皮緊密。

強制性節(jié)約