In addition, Ming Yang's self-manufacturing and testing facilities to produce gearbox, generator and pitch control system are progressing as planned.

此外，明阳的自主制造和生产齿轮箱，发电机，变桨距控制系统的检测设施，是按计划进行的。

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For reasons such as the sounding features of bell chimes and the long time burial, however, no convincing judgment of pitch can be drawn from the incertitude of the testing data.

但由于编钟的发音特点及其埋藏历史久远等原因，迄今对其测音数据的不确定性难以作出令人信服的律制判断。

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For long time the focus of dispute about adscription of pitch of bell chimes in Zenghou Yi Tomb is the analysis on the data of testing sounds.

关于曾侯乙编钟律制归属问题，长期以来争论的焦点集中在对其测音数据的分析上。

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