1 Self-threading or sheet metal screws may be used if threads are not stripped when the screw is tightened with a torque of 3.39 N·m (30 lb·in) and if the part or the assembly supported by the screw withstands for 1 min a force equal to four times the mass of the part or assembly, applied in a direction coincident with the axis of the screw.

測試方法：用3.39N.m（30lb.in）的扭力扭緊螺絲，并在裝配表面的螺絲軸向施加于四倍于裝配物重量，螺蚊應(yīng)不受破壞国产www77爽777。本文由tinson2008在安規(guī)網(wǎng)發(fā)表，如果提示附件不存在A片视频免费观看在线，點我進(jìn)入備份站下載！

When I hit the snare drum, the particles on its surface are forced to vibrate. And therefore it causes the air particles to oscillate, which results in the formation of a longitudinal traveling wave. Therefore energy is transmitted in this process. Moreover, according to the Newton's Third Law, the snare drum and my hand are action and reaction pair. Hence, a force which is equal in magnitude but opposite in direction would act on me.

當(dāng)我用力敲在鼓皮上www成年人视频，其表面粒子產(chǎn)生的振動帶動了空氣粒子的振動亚洲三级片啪啪，形成傳送能量的行波，并使我的耳膜劇烈震動夜夜爽人人爽；而根據(jù)牛頓第三定律国产精品免费视频XXXX，鼓皮會施予鼓棍一個方向相反但數(shù)值相等的力，并傳到我的手中好黄的视频网站！

In cgs units, a magnetizing force gives rise to a flux density or field, with the units being equal in magnitude if in free space.

在厘米-克-秒單位制中亚洲欧美偷拍视频，磁化力在自由空間中產(chǎn)生等量的磁通密度或場強。