The valve chamber cover is missing.

阀室盖不见了。

youdao

The noise of 4110Q diesel engine and its oil pan, flywheel cover, oil pump, valve chamber has been studied by the analysis system of B&K3560 in the normal Semi-anechoic chamber.

在标准半消声室，用B&K3560噪声测量分析系统对4110Q柴油机整机和油底壳、飞轮壳、喷油泵、摇臂罩等零部件的噪声进行了台架试验研究。

youdao

Engine fittings series:Gear chamber, Cavaera cover, Sprocket rooms cover, Preheaterbase, Water pump Cover, Intake manifold, Pump box.

发动机配件类：齿轮室、气门室罩盖、 链轮室罩盖、预热器座、水泵泵盖、进气歧管、泵箱；

youdao

That is not the only cover the Chamber provides.

ECONOMIST: Corporate lobbying

In a large heart attack, the area of cell death can cover the entire thickness of the chamber's wall.

BBC: Dr Robert Judd

First a series of changes to procedure will be considered - these cover everything from the rules on ministerial statements to the allowing of "hand held electronic devices" in the chamber.

BBC: Viewing guide: The coming week's highlights in Parliament