A one you may lose a couple of boards on the roof.

一个“一级”你可能会失去几块屋顶。

The ejecting plate is too thin .

顶了。

The box was made of sheets of corrugated tin roofing that had survived the fire.

这个盒子是由在火灾中幸存下来的波纹状锡制屋顶制成的。

For instance, pilots have a horn switch on  the overhead panels of the Boeing 737 family.

例如，飞行员在波音 737 系列的顶上有一个喇叭开。

In fact, I've already given it to you up there, it's up on that top board.

事实上，我已经把它给你了，它就在那块顶上。

The tiny switch on the overhead  panel says " GRD CALL" or " GND." It depends on the aircraft model.

顶上的小开显示“GRD CALL”或“GND”。这取决于飞机型号。

We need a view from above showing the general arrangement of all of the roof panels - a plan of the whole area.

我们需要从上方俯视的视角来展示所有屋顶的总体布局——整个区域的平面图。

Upon her head boards, in large gilt letters, he read " Bouton de Rose, " —Rose-button, or Rose-bud; and this was the romantic name of this aromatic ship.

船头顶上有几个镀金的法文字：“Bouton de Rose”—“玫瑰苞”或“玫瑰蓓蕾”；这艘芳香扑鼻的船便取了个这么富有浪漫气息的芳名。

So first of all we're comparing Q1 and Q2 with what they used to produce, and what they used to produce is on the top board.

因此， 首先， 我们将 Q1 和 Q2 与他们过去生产的产品进行比较，他们过去生产的产品位于顶上。

Built in just six days, it features wall and  roof panels made from Nexiite, which were precision manufactured at the company's production  facility before being pieced together on site.

它只用了六天就建成了，它的特点是采用 Nexiite 制成的墙和屋顶，这些材是在公司的生产设施中精密制造的，然后在现场拼凑在一起。

A flow of electrons is a current, and, using the circuitry in this chip, we can measure  the current drawn to the top plate, which is what happens under normal conditions when no smoke  is present.

电子流就是电流，利用该芯片中的电路， 我们可以测量流到顶的电流，这是在没有烟雾的正常情况下发生的情况。

Well, the main idea is that  the batteries and microprocessor apply 3 volts to all the traces on the bottom sheet, while  all the traces on the top sheet are actively being monitored by the processor on the PCB.

嗯， 主要的想法是电池和微处理器对底上的所有走线施加 3 伏电压，而顶上的所有走线都由 PCB 上的处理器主动监控。

On this top board, which is glued to the backside of the speaker, we find two points where the speaker connects, along with a larger microchip, which handles Bluetooth connectivity and decodes the compressed audio stream sent from the smartphone.

在这个粘在扬声器背面的顶上，我们发现了扬声器的两个连接点，以及一个更的微芯片， 用于处理蓝牙连接并解码从智能手机发送的压缩音频流。