They strongly suggest that the neutrino has mass, albeit an infinitesimal amount.

他们强烈表明中微子是有质量的，尽管质量是无穷小的。

youdao

They do not know why matter has mass.

他们不知道为什么物质会具有质量。

youdao

L The rod has mass m and it has length l.

杆子质量为M，长度为。

youdao

"South Africa has two percent of the world's land mass but has 10 percent of the world's flora."

VOA: standard.2010.08.09

If a photon which has no mass can behave as a particle, does it follow then an electron which has mass can behave as a wave? 1920.

如果一个没有质量的光子,能像粒子一样运动，那么它能像一个,没有质量的电子那样以波的形式运动吗。

麻省理工公开课 - 固态化学导论课程节选

If a proton which has no mass can behave as a particle does it follow that an electron which has mass can behave as a wave?

如果一个没质量的光子能像粒子一样,具有质量的电子能否,表现得像波一样吗？

麻省理工公开课 - 固态化学导论课程节选

He is a shrewd manipulator behind the scenes, but has no mass appeal.

ECONOMIST: India

The pressure has included mass kidnappings, attacks on electricity pylons and, earlier this month, blocking the highway between Bogota and Medellin for days.

ECONOMIST: Colombia

Megawati Sukarnoputri, daughter of Indonesia's first president, also has a mass following, but seems to want to wait for power to fall into her lap.

ECONOMIST: Indonesia: Zingabust | The