screwed down

screwed down 基本解释

拧紧；使降低价格；束缚

screwed down 用法和例句

1、The coffin lid had been screwed down.

棺材盖已经盖紧了。

2、The beam was screwed down to the cross bar.

横梁已用螺丝柠在垮木上。

3、The blackboard was screwed down to the wall.

黑板是用螺丝拧在墙上得。

4、Squeaking floorboards should be screwed down.

踏上去咯咯作响的地板应用螺钉钉住。

5、Ensure the fittings of Ripple Pipe and water pipe have be screwed down.

确认波纹管和水管得接头是否拧紧。

6、Azimuth must be set with clamp screwed down because of angle in platter surface.

因为唱盘表面的角度问题，方位角必须在拧紧唱片镇后进行。

重点词汇

screwed adj. 用螺丝拧紧的，螺丝状的，喝醉的 v. 用螺丝拧紧( screw的过去式和过去分词 )；拧上去；（和某人）性交；诈骗（钱财等）

down adv. （坐、倒、躺）下；向下；（表示范围或顺序的限度）下至 prep. （从高处）向下；（表示位置）在…的下方；（表示方向）沿着…向下；（表示时间）自…以来 adj. 向下的；沮丧的；计算机或计算机系统停机；（以…）落后于对手的 n. （鸟的）绒羽；绒毛；软毛；汗毛 vt. 放下；（尤指大口或快速地）喝下；使摔倒；击落（敌机等） vi. [常用于祈使句中]下去；下来；卧倒；下降