查询词典 pitch-dark

From the runner balancing standpoint it is simpler by far to situate the impressions on a pitch circle diameter and feed each impression directly from the sprue via a runner rather than to incorporate a main and branch runner system.

从流道平衡的角度考虑，把型腔分布在圆周的等分点上直接从主流道通过分流道注入每个型腔的方法，远比通过一级分流道和二级分流道系统的方法简便。

The model′s rationality is briefly discussed,from this the mathematical formula for model′s parameters are derived such as pitch circle diameter,secondary current,effective depth of hearth,electrode diameter and operation tesistance etc.

文章简要地论述了此熔炼模型的合理性，并由此导出了极心圆直径、二次电流、炉膛有效深度、电极直径、操作电阻等模型参数的数学表达式。

When described as a distance of an arc on the engagement pitch circle, it is called "Circumference Direction Backlash", when described as the shortest distance between two opposing tooth surfaces is called "Normal Line Backlash".

当描述为齿间弧度距离时，也叫做"圆周向回程间隙"。当描述为两啮合面的最短距离时，也称作"常规线性回程间隙"。

We all know, unit type flexo printing machine in business card printing and membership card when requesting all Nano-imprint lithography drum, block drum of gear as far as possible in the gear mesh on the pitch circle, to ensure that working pressure stationary homogeneous.

家喻户晓，机组式柔印机在制卡和会员卡制息时给求所有压印滚筒、印版滚筒的齿轮都尽不定在齿轮的节圆上啮分，以包管处事不不不张力陡稳陡均。

This study refers to the conditions of practical powder metallurgy manufacture process, and proceeds to experiments and gear precision measurements as well as investigation on the effects of two parameters, powders and pitch circle radius, on gear precision. The relationship between gear parameters and gear surface deviations was derived from the mathematical model for the involute helical gears and the analysis of gear surface deviations.

本论文将采用实际上粉末冶金螺旋齿轮的制程条件，进行试作实验与齿轮精度的量测，以探讨粉末及螺旋齿轮之节圆半径这两个制程参数对於齿轮精度的影响；同时应用齿轮创成原理所推导之螺旋齿轮数学模式，配合齿面变异分析，求得齿轮设计参数改变量与齿面变异量之关系。

NTN development went Dmn to be worth diameter of 〔 bearing pitch circle × rotate speed coming back is spent 〕 is 1.5 million, but the thrust needle bearing that high speed runs.

NTN开发出了dmn值〔轴承节圆直径×旋转速度〕为150万、可高速运转的推力滚针轴承。

The study on co-carbonization of coal tar pitch and lean coal with different blending ratios was conducted.

摘 要：进行了不同配比的煤沥青和贫煤的共炭化研究，研究表明，煤沥青与贫煤共炭化时的相互作用是物理融合和化学相互作用的共同作用。

Therefore, coal tar pitch modified with 4-MB was qualified to be an excellent carbon precursor.

因此，改性后的煤沥青有望作为优质的炭材料基体前驱体。

OBJECTIVE: To study the expressions of Nrf2 and NQO1 mRNA, Nrf2 protein by coal tar pitch extract.

目的： 研究煤焦沥青烟提取物对人肺支气管上皮细胞(BEAS-2B)Nrf2、NQO1 mRNA及Nrf2蛋白表达的影响。

The formulation,production process of epoxy coal tar pitch high build coatings and its application in corrosion protective projects have been describe

介绍了环氧煤沥青厚浆涂料的配方、工艺及其在防腐蚀工程中的应用。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。