引力质量

There are two forces that counteract gravity to suppress the fragmentation of the cloud: thermal pressure from the heat of protostars, and turbulence, which may allow massive stars to form directly from accretion.

有两种力可以抵消引力的作用从而抑制星云的破碎：源于原恒星热量的温压，以及湍流--它可能允许大质量恒星通过吸积直接形成。

According to their simulation, gravity acted on minute density variations in matter, gases, and the mysterious "dark matter" of the universe after the Big Bang in order to form this early stage of a star -- a protostar with a mass of just one percent of our sun.

根据他们的模拟，大爆炸之后，引力对宇宙中的物质、气体和神秘的&暗物质&起作用使其分布密度产生变化，从而形成原恒星状态——形成的原恒星质量只有太阳的1%。

If the electric charges in the two stars are supposed to be equal, it can be calculated according to the Kulun's theorem that 19100 nuclear unity masses must have one electron , such that the electromagnetic force produced can provide enough centrifugal force for the rotation.

假定两星所带的电荷数量相等，根据库仑定律，我们可以计算出，在两星中平均每19100个原子单位质量，就必须带有一个电子电荷，所产生的静电引力才能够提供足够的向心力。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。