self y Notice what I also do here, I create self dot y, give it a value, and then, oh cool, I can also set up what's the radius and angle for this point, by just doing a little bit of work.
我创建了，然后给它赋值，然后，噢太酷了，通过做一点额外的工作,就可以得到点的半径和角度了，好，实际上如果。
So, remember, when we did it first over z, we start by fixing a point, x and y, and for that value of x and y, we look at a small vertical slice and see from where to where we have to go.
要牢记，当我们对z积分时，首先固定一个点，看看它们的值，取一个垂直切片,并找出z的积分限。
Phase analysis shows that the distance of crystal face of WC increases and oxide film of Y forms on the surface by Y ion implantation.
相分析表明，离子注入使WC晶面间距增大，稀土元素Y的注入在材料表面形成了Y的氧化物膜层。
Y-MCM-41 containing secondary building units of Y zeolite was prepared and then treated by ion exchange method.
制备了含有Y沸石次级结构单元的Y-MCM-41，并对其进行离子交换处理。
The center frequency and bandwidth of Y-aperture are much more influenced by the substrate thickness change than those of Y-loop element FSS.
介质厚度的变化对Y孔中心频率、带宽的影响要比Y环单元FSS的大得多。
Indeed, the first two months of this year saw Canadian exports surge by 40% y-on-y, fuelled by a huge rise in shipments to Japan, South Korea and Europe.
今年前两个月加拿大的出口同比增长了40%，主要是因为运输到日本、南韩、和欧洲煤炭增加了。
Indeed, the first two months of this year saw Canadian exports surge by 40% y-on-y, fuelled by a huge rise in shipments to Japan, South Korea and Europe.
今年前两个月加拿大的出口同比增长了40%，主要是因为运输到日本、南韩、和欧洲煤炭增加了。
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