The stand is not strong enough for this heavy machine.

机器太重， 这个架子吃不住。

《新英汉大辞典》

Giovanni Caselli, an Italian priest, invented a large, heavy machine that could send and receive an actual copy of written notes or pictures.

乔瓦尼·卡塞利是一位意大利牧师，他发明了一台笨重的机器来发送和接收文字记录或图片。

youdao

The Dual Remote Weapon Station is equipped with two weapons, the primary weapon can be a 40 mm AGL or a 12.7 mm heavy machine gun, and the secondary weapon is a 7.62 mm machine gun.

双遥控武器站装备有两个武器，主武器是一个40mm口径的榴弹炮或12.7mm口径的重型机枪，副武器则是一个7.62mm口径的机枪。

youdao

The Movement for the Emancipation of the Niger Delta (MEND) says armed with assault rifles and heavy machine guns raided an oil facility jointly operated by Royal Dutch Shell and Chevron in Rivers state.

VOA: standard.2009.12.21

Sounds of heavy and light machine gun fire rattled Maiduguri as Nigeria's army pounded suspected hideouts of the Islamic rebels in a bid to flush out remnants of the militant Boko Haram sect.

VOA: standard.2009.07.30

The Iraqis have fired some mortars in the direction of Chamchamal and some heavy machine-gun fire.

CNN: Kevin Sites: Kurds see bombing on northern Iraqi positions

We tried where possible to limit the list to handheld or easily portable objects, eliminating most heavy machine tools, like hydraulic jacks.

FORBES

As a heavy machine gunner, Monsoor had to stay behind the point man on foot patrols and protect the unit from attacks.

CNN: Navy SEAL paid ultimate price to save buddies