Perfume oil analysis with GC-MS machine. Issue of frame formulas.
利用气相质谱仪等进行香精分析。
Another is GC-AED method which identifies oxygen element in gasoline.
另一种是用GC -AED方法鉴定汽油中的氧元素。
First let's see how GC gets memory from the OS.
首先我们看看GC怎么从操作系统获取内存吧。
However, the right GC policy can also deliver significant performance advantages to an application.
不过，正确的GC策略能够为应用程序交付重要的性能优势。
Garbage collection (GC) will usually kick in when a memory allocation failure occurs.
当出现内存分配失败的时候，通常将启动垃圾收集(GC)。
Many developers use verbose GC data to help choose the best size for the heap.
很多开发人员都使用详细GC数据来帮助选择堆的最佳大小。
This is a real indication of how too much GC can truly affect performance.
这一点真实地说明了过多的GC可能会对性能产生怎样的影响。
Verbose GC usually has relatively little performance impact on an application.
详细GC通常对应用程序性能的影响比较小。
Note that when the GC is inactive, application utilization is 100%.
注意，如果GC是不活动的，则应用程序的利用率为 100%。
Furthermore, the time when the GC will interrupt the application is traditionally unpredictable.
此外，GC中断应用程序的时机在传统上不可预测。
So you really want to keep your GC heap size under control.
所以你真的需要控制你的GC堆尺寸。
You could also think of the rate of GC as the rate of garbage generation.
您还可以将GC的速率看作是垃圾生成的速率。
First of all, the GC heap is part of your working set.
首先，GC堆是你的工作集的一部分。
The flag setting used above did not prevent GC from running.
前面使用的标签并不能阻止GC的运行。
You can use more than one thread to perform GC.
可以使用多个线程来执行gc。
Secondly, you want to keep the time you spend in GC under control.
其次，你希望控制花在GC上的时间。
The second objective is to avoid, as much as possible, having a full GC.
第二个目标是尽量避免完全的GC。
Also, two things tell us that this is not a full gc.
此外，通过如下两点，我们可以知道这不是一个完整的gc。
Time paused in GC ops / Time for period of interest = % of GC overhead
由于GC 操作暂停执行的时间 / 总时间 = GC开销百分比
Excessive garbage collection (GC) is a common cause of poor application performance.
过度的垃圾收集(Garbage Collection,GC)是性能低下的一个普遍原因。
Garbage Collection (GC) is to memory management.
垃圾回收(GC)之于内存管理。
The third line shows Full or Major GC.
第三行显示了一个完全（Full）或较大（Major）GC。
Avoid calling gc from within your code through System.gc call.
通过System .gc调用避免在代码中调用gc。
Verbose GC helps you determine whether your memory heap is big enough or too big.
VerboseGC有助于您确定您的内存堆是否太多或太大。
The flag has three sub-flags: gc, class, and jni.
该标志有三个子标志：gc、class和jni。
Now let's perform some basic log analysis tasks with the GC and Memory Visualizer.
现在让我们使用EVTK执行一些基本的日志分析任务。
Step 3. Analyze GC Behavior over the Lifetime of Your application.
分析GC在你的应用程序中的行为。
Is a generational GC possible for 1.9.2?
新一代垃圾收集器能否和1.9.2有缘呢？
In this type of GC, only the mark and sweep phases of GC are run.
在这类GC内，只运行GC的mark和sweep阶段。
30% of that time is spent on GC.
30%的时间花在GC上。
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