Black areas on the sealing surfaces of piston rings indicate()
Grease coatings on electrical contact surfaces increase contact resistance and should be removed with a/an ().
The horizontal flat surfaces where the upper stock joins the rudder are the().
On which of the following heated surfaces of a flash type evaporator would you be more likely to find soft scale formation?()
Additives () protective layers on metal surfaces guarding them against corrosion.
Scuffed cylinder liner surfaces in a diesel engine can result form()
The lube oil to lubricate the surfaces of the cylinder liners is spread over by the ().
The way to reduce () is to build up a film of lubricant between any two surfaces that rub against each other.
延伸曲面命令Extend Surfaces有两种不同的延伸类型,分别是()。
在Surfaces中旋转命令是哪个()