The upper metal nanocrystals as an additional charge trap layer enable the direct tunneling mechanism to enhance the flat voltage shift and prolong the retention time.

说明顶层的金属纳米晶作为一层额外的电荷俘获层可以通过直接隧穿机制进一步延长保留时间和提高平带电压漂移量。

youdao

The angular upper storey is wrapped in a skin of expanded metal mesh, which is pre-rusted to give it a reddish hue that will continue to weather over time.

敦实的上层用扩张金属网包裹，以此作为它的表皮，预制生锈的金属赋予住宅上层一种红色的色调，随着时间的推移，它将被延续下去。

youdao

Black zinc wraps over the upper level providing a protective metal clad enclosure perched on, and cantilevering beyond, the precast concrete wing walls below.

黑锌板包裹了整个上层空间，形成金属保护层，而在悬臂之下是预制混凝土翼墙。

youdao

Such concentrations are usually created by geological events, such as volcanic eruptions and tectonic plate shifts that steer hot metal-bearing fluids into upper, accessible parts of the Earth's crust, erosion, or massive sedimentary movements.

WSJ: Exhausting the Earth's Resources? Not So Fast

Blocking the way up the stairs was a massive yellow iron metal door that sealed off access to the upper two floors of the house.

CNN: A visit to Osama bin Laden's lair

They found a metal-like shine on the leaves, indicating that the upper and lower epidermis were dying.

FORBES: Wi-Fi Might Not Kill Trees After All