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The subsequently additional hot treatment is not necessary and the treated chrome steel can be used, such as blade in steam turbine.

随后的附加的热处理不是必需的，如此处理过的部件能够被用作为，例如，蒸汽轮机中的叶片。

On this and the ordinances about circumcision it is not necessary to enter further.

在此法令和有关割礼，没有必要再进入。

It's not necessary to have classes in your free time.

在你的空闲时间去上课是不必要的。

In particular, we compute Hochschild homology and cohomology groups of infinitedimensional path algebras and some of their quotient algebras, and we prove that for a general monomial algebra (not necessary finite-dimensional), all Hochschild cohomology groups of positive degrees vanish if and only if its Gabriel quiver is a finite tree.

特别地，我们计算了无限维路代数以及某些商代数的Hochschild同调群和上同调群，而且给出了一般单项代数的各正次Hochschild上同调群为零的充分必要条件，即它的Gabriel箭图是有限树。

For this training session, you might want to use a dog training collar, but it is not necessary.

进行这项培训会议上，你可能会想用警犬训练衣领，但它是没有必要的。

What's worse, they think that the temperature condition is not necessary for seeds to come into leaf and that plants can also grow well without fertilization.

学生对於植物生长的另有概念包括将根与茎的名词定义错误，认为植物是「先长茎再长根」或「先长果实，后开花」；并对植物器官的功能不熟悉；缺乏植物的「花」、「果实」具有传宗接代等繁殖概念；「温度」条件对种子发芽而言是非必要的；植物有「施肥」就长得更好，没有施肥也不会怎样；知道植物可以用种子繁殖，除了种子以外可以繁殖的器官学生多数只看过落地生根用叶子繁殖，缺乏更多的实际经验。

The broadcasting means of internet provide internet viewers the fundamental opportunities to gain and exchange information actively and communicatively, because it overcomes the limits of time and space, it is not necessary to receive the program passively according to the linear broadcasting order set up by editors.

网民和受众不再需要按线性的播出流程被动地接收由编辑编排好的节目内容，而可以在无限广阔的节目信息空间中，根据自己的爱好和需求检索、选择传播节目。

It is not necessary that we all commute with one person in one car.

一个人独占一辆汽车是没有必要的。

It is not necessary to introduce a complex concept of fraction, just give them an example!

采用复杂的分数概念是不必要的，只是给他们一个例子。

A course in one complex variable would be helpful, but is not necessary.

一个复杂的一个变数当然会有帮助，但没有必要的。

In that case, Martin's death to the author Mo Bushi from real life, to deny Spencer, right?

那么，马丁·伊登的死莫不是作者为了从实际生活中来否定斯宾塞吧？

According to the electrical diffraction of the conglomeration, the particles are A-zeolite crystals. In the surface of micro-crystal of A-zeolite, the cuboidal nano-crystal A-zeolite grows, so A-zeolite crystal steps can be observed with TEM.

同时，在A型沸石的晶化初期，样品的TEM照片中可见许多团聚体，部分团聚体表现为A型沸石所具有的立方体形态，根据电子衍射测定，构成团聚体的颗粒为大量的纳米晶体。