蚀刻

They can be divided into 2 major categories, first printed circuit board chemicals including etchants, inner layer cleaners, desmear chemicals, electroless copper, stripper agents, etc. These products caters to process needs of both domestic and foreign PC board manufacturers.

主要的产品可分两部分，一为印刷电路板的化学药品，包括有蚀刻液、内层清洁液、去胶渣化学品、无电镀化学铜、黑棕化液和剥锡铅液等，提供国内外各PC主板公司生产流程所需的化学药品。

Examples of Reactive Ion/Plasma Etchers

图1。反应离子/等离子蚀刻的例子

Two control methods have been studied for the control of TCP etchers; one is EWMA (Exponential Weighted Moving Average), the other one is LS. In EWMA controller, the control parameter is the etching power, while they were etching power, chamber pressure, and gas flow rate in the LS control.

在作法上，我设计了EWMA(Exponential Weighted Moving Average)及LS控制器来模拟与分析，由於EWMA模拟时会需要有一个目标模型，所以我另外以最小平方法和最佳化公式建立一个以腔体压力，功率，氯气流量为变数，蚀刻深度为输出的模型以供EWMA控制器模拟时使用。

By the end of the 1920s he was producing large numbers of etchings for literary commission and for exhibition.

到20世纪20年代末，他曾为文学委员会和展览创作了大量的蚀刻作品。

It was estimated in 1960s that he produced approximately 600 paintings, 300 etchings, and 1,400 drawings.

据20世纪60年代统计，他一生留存的作品有油画600幅，蚀刻版画350幅，素描1500幅。

These etchings form the paths that electricity follows in the chip.

这些蚀刻版画形成路径电在薄片中跟随。

This comparison includes photographic and photogrammetric studies of bas-reliefs, paintings, sculptures, etchings, and other forms of art.

我们所进行的摄影和摄影测距对比实验，包含浮雕，绘画，雕塑，蚀刻在内的很多种艺术手段，但它们都没法和都灵裹尸布比拟。

Etchings and sculptures of men in spacesuits.

还有那些蚀刻及雕刻中穿着宇航服的人

While the Chinese are sometimes represented in romantic ways, particularly in paintings or etchings, they are also at times represented as an amorphous threatening horde.

尤其是在绘画或蚀刻版画，华人有时代表罗曼蒂克的方式，但他们常常被认为是一伙具有威胁性的种群。

We are left with an odd and possibly fictional story: what we see, after all, is a plain old fruit pit.

哎糟糕！文字解释说这些蚀刻的细节多多少少已被时间磨损，只留给我们怪异似小说情节的故事：毕竟我们看到的，只是一个普通的旧果核。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。