查询词典 pitch-black

Generally speaking, the pitch can be divided into "absolute pitch " and "relative pitch "...

一般地说，音高可以分为&绝对音高&和&相对音高&。。。

The study showed that interaction of co-carbonization of coal tar pitch and lean coal was the coaction of physical bond and chemical interaction, in which the bond state of coke interface was improved by physical bond, and coal tar pitch varied the carbonization behavior of lean coal through chemical interaction with the increase of the blending ratio of coal tar pitch, the caking property of coal blend was greatly improved, OTI value of coke was increased, while ISO value was reduced.

其中物理融合表现在使焦炭界面结合状态改善，化学相互作用表现在煤沥青使贫煤的炭化性能发生变化。随煤沥青配比的增加，配煤黏结性有较大改善，焦炭OTI值增大，ISO值减小。

On the basis of equivalent planar pitch,the tooth profile of the equivalent gear was gotten through simulation when the pitch curve of the gear shaper rolled on the equivalent planar pitch curve.

以平面当量节曲线为基础，通过确定插齿刀的节圆沿平面当量节曲线做纯滚动时插齿刀上各点的运动轨迹，模拟了插齿加工包络出当量齿轮的齿形过程，将非圆锥齿轮的设计转化为平面齿轮的设计，简化了非圆锥齿轮的设计。

Fine Pitch: Fine pitch is more commonly referred to surface-mount components with a lead pitch of 25 mils or less.

细间距：通常指引脚间距小于25密尔或以下的表面封装元件。

The microprocessor controlled pitch regulation ensures continuous and optimal adjustment of the angles of the blades in relation to the prevailing wind.The pitch mechanism is fitted in the blade hub and contains a separate hydraulic pitch cylinder for each blade. These separate cylinders also ensure triple braking safety, because one feathered blade is sufficient to stop the turbine.The adjustment procedure takes place every second.

微处理器控制叶片针对自然风向进行连续不断地最优的角度调节，每个叶片里面都分别配有一个液压缸来适配这种机械调节装置，这些分离的液压缸同时能保证涡轮机的制动安全，叶片转得过快足以导致涡轮机停机。

The pitch refinement algorithm improves the resolution of the pitch from one half sample to one quarter sample around the pitch estimated by HPEM.

基音修正是在HPEM的基础上进一步提高基音估计的精确度，其目的是提高高频谱的拟合程度。

The following three disadvantages of power spectrum reprocessing method for pitch detection are found: half pitch error and double pitch error with transition sound; easy distortion in noise speech; the complex method of judging voiceless and voiced speech.

本文分析了功率谱二次处理基音检测方法的不足：对于过渡语音，易产生半频或倍频误判；噪声干扰下，检测结果易失真；清、浊音的判断方法复杂。

And is improved; Water cooking method go on adherence test indicate to asphalt mixture, the viscosity rises to 4 or 5 from 3 or 4; The equivalent of changing the pitch of modified asphalt some, the needle enters one degree of findings in high- temperature performance , such as index ,etc., the high-temperature performance of changing the pitch of silicon is improved to some extent; Indicate that the mobility of the modified pitch is diminished in glueing the research of playing the index ; Oppose water damage research of ability indicate , resist water damage ability raise to some extent.

按标准对沥青混合料进行配级后，用马歇尔实验确定了12%由擦洗法提纯的露水河硅藻土改性沥青混合料的最佳沥青用量为4.5%，用硅藻土改性沥青改性效果较好，可用做公路沥青路面的改性材料。硅藻土改性剂与沥青在强制搅拌过程中，没有发生明显的化学变化，主要是物相之间的分散、均混、吸附和交联，所以主要是物理意义上的共容，因此是否共容，混匀至关重要，只有改性剂微粒能均匀稳定的分散在沥青中不发生分层、凝聚和离析，才能达到理想的改性效果。

The surface morphologies of coal pitch spheres were characterized by scanning electron microscope and polarized light microscope. The effects of naphthalene content on the softening point of the modulated pitch, balling temperature on the spheres morphologies and the max mass ratio of pitch to the liquor were investigated.

使用扫描电子显微镜和偏光显微镜对沥青球的表面形貌进行表征，探讨了减黏剂萘含量对调制沥青软化点的影响，成球温度对球形貌的影响以及沥青／水相的最大质量比。

As prepared sample were characterized by FTIR and XRD, Results showed that the C-H bonds disappeared and the C-F bonds gradually increased in the process of reaction, the plane structure of mesophase pitch molecule was destroyed and distortion molecule construction of pitch fluoride took place it, moreover, the average distance between layers gradually increased with the enhancement of the F/C atomic ratio of pitch fluoride.

红外测试表明：随着氟化反应的进行，C-H键消失，C-F键形成并逐渐增加；XRD测试表明：中间相沥青中原有的大分子平面芳烃结构被破坏。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。