查询词典 pitch line

Provides for the pitch d, f, a, c, and f-line painted red, c painted yellow line (later to become Zhonggao Yin Staff and the origin of the bass clef). The 13th century was the first use of 5 lines, to become the predecessor of Staff. 16th century and increase the line to make the pitch more complete records.

规定音高为d、f、a、c，并将f线画成红色，c线画成黄色（后成为五线谱中高音及低音谱号的起源）。13世纪有人使用第5根线，成为五线谱的前身。16世纪又有加线的办法，使音高的记载更完备。

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The pitch-line velocity is the velocity of the pitch circle.

该 漆黑的夜里，线速度，是速度的草地循环。

The word line pitch is about 1.5F, while the digit line pitch is about 3F.

所述字线间距为约1.5F，而所述数字线间距为约3F。

Much attention is paid to the mesh principle of variable ratio rack and sector, which includes the principle of variable ratio, the selection of gear type, the setting up of rolling pitch line, and the determination of tooth profile.

重点说明转向器中变速比扇形齿轮和齿条的啮合原理，包括变速原理，变速齿轮的选择，滚动节线的建立，齿形的确定等问题。

This method could not only applied to outer noncircular gear with all convex pitch line but also applied to outer noncircular gear with partial concave pitch line and inner noncircular gear.

这种磨削原理不仅可以应用于节曲线外凸的非圆齿轮，而且可以应用于磨削带内凹节曲线的外非圆齿轮及内非圆齿轮。

At the same time, the essential motion in the gear grinding process and the structure of gear grinding CNC has been discussed. This method could not only applied to outer noncircular gear with all convex pitch line but also applied to outer noncircular gear with partial concave pitch line and inner noncircular gear.

把成形砂轮看作插齿刀的一个刀齿，就可以利用非圆齿轮插齿加工过程中齿廓成形原理，推导出非圆齿轮齿廓的成形砂轮展成磨削方法，同时讨论了按这一原理磨齿时需要的运动及数控机床结构。

This area is marked by the goal line, two lines starting on the goal line 16.5 m (18 yd) from the goalposts and extending 16.5 m (18 yd) into the pitch perpendicular to the goal line, and a line joining them.

在球场两端的球门线上，各距球门柱十八码的地方，向场内划一条十八码长的垂线，再划一线将这两条垂线伸向场内的两端连接。

Air-end made in Germany has only two moving parts:the male and female rotors. Contact occurs only on a lubricated pitch line,so wear is virtually eliminated.As a result,the air-end have character of high effciency、light duty、silence and high reliability.

采用德国原装进口主机，主机内只能有阴阳转子两个运动部件，两转子仅通过油膜接触，不磨损；具有高效率、低能耗、低噪声和高可靠性的特点。

When No. 3 oil is used, put in 3000rpm, 8. 59Nm, the gear surface has an obvious plastic flow, an obvious groove is found on pitch line of the driving gear , an obvious edge is found on pitch line of the driven gear . The operating surfaces of both driving gear and the driven one is high in smooth finish, no pitting. Through the analysis on the gear surface only based on the gear in experiment with No.

实验的结果为：ISOVG68机械油作润滑油时，在输入3000rpm，5.96Nm时，齿面发现沿节线出现大面积的点蚀，且齿面有塑性变形；以3#油为润滑油时，在输入3000rpm，8.59Nm时，齿面发生了明显的齿面塑性流动，主动轮在节线处出现明显的沟槽，从动轮在节线处出现明显的棱脊，大小齿轮工作齿面均十分光洁，未发现点蚀现象发生。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。