She had tried to talk on the way, but no sound could be heard through the heavy cover.

她在路上试着说话，但透过厚重的覆盖物听不到任何声音。

youdao

In order to overcome the difficulty of heavy cover plate installation with two times of welding, a welding procedure finished cover plate welding at one time is put forward.

针对采用“两次拼焊工艺”拼焊大型盖板存在的问题，提出了“一次拼焊”工艺。

youdao

Its advantages are discarding thick and heavy cover glass, high utilization ratio of energy, high brightness of refraction image, easy to making plane frame of hologram for display and easy to carry.

该法优点是不需要厚重玻璃衬板，光能利用率高，重现像亮，易于把全息图制成平面一体化构架，便于携带。

youdao

Then a long wooden stick is used to slowly push a heavy cover down on the bags.

VOA: special.2009.09.29

The 510 is suited for the most challenging conditions, such as canyons and adventures with heavy tree cover.

ENGADGET: Edge 510 and 810 cycling computers appear on Garmin's web store (update: hands-on photos)

But the trail, in this case, is intriguing: Someone lifted a heavy manhole cover and climbed down several feet to cut the cables.

FORBES: Silicon Valley

These systems must be smart enough to independently switch back and forth from solar when the sun is out to fuel at night or when there is heavy cloud cover.

ENGADGET: Marines eye solar energy to eliminate dependency on fuel generators (video)