Various meanings of letters on a circuit board

Do you know the meaning of the letters on the board?

Rx is the resistance, there are a lot of resistance in the circuit diagram, numbered R1, R2…

Cx is the no polarity capacitor, the power input terminal, the anti-interference capacitor;

IC integrated circuit module;

Ux is the IC (integrated circuit element);

Tx is the test point (for factory testing);

Spk1 is Speaker (buzzer, horn);

Qx is a triode;

CEx- electrolytic capacitor, CNx- capacitor, RNx- exclusion resistor, CONx- connector, Dx-Diode (diode), Lx- inductor / magnetic bead, LEDx- led, Xx- crystal oscillator;

RTH (thermistor);

CY (Y capacitor: high voltage ceramic capacitor, safety gauge);

CX (X capacitor: high voltage film capacitor, safety gauge);

D (diode);

W regulator tube;

K switch class;

Y crystal oscillator;

R117: the resistance on the main board is 17;

T101: transformers on the main board;

SW102: switch;

LED101: led;

LAMP: (indicating) lamp;

Q104 (E, B, C): crystal triode, E: emitter, B: base, C: collector.

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