Maged Mohommed Ahmed Al-Harazi, 36, was charged with murder after the body of Sabah Al-Mdwali, 28, was found on a bed inside the couple's Knoke Avenue house in 2015.

It's alleged Mr Al-Harazi inflicted 57 knife wounds as his wife fed their youngest child in an upstairs bedroom the night of March 16.

Prosecutors say the couple's other two children - then aged seven and five - were home at the time.

Mr Al-Harazi has maintained his innocence and blamed his wife's father and teenage brother for her death.

The two men were arrested soon after Ms Al-Mdwali was killed, but were later released without charge.

Al-Harazi's trial continued to hear from forensic experts as it entered its fourth week in the ACT Supreme Court on Monday.

The jury was shown photographs of a pale blue and white striped infant's sleeping bag with an embroidered elephant on the front.

Blood pattern analyst Mojca Keglovic spoke of numerous bloodstains she examined on the front of the sleeping bag.

She said they appeared in a line from the top left of the suit to the bottom right.

Ms Keglovic described the stains as creating a "cast-off" pattern that indicated the direction an object had been travelling when the blood was released.

All the marks were made "as part of the same event" and were impact, or projected stains, she said.

The witness admitted it was difficult to determine the size and direction of bloodstains on fabric but denied, under cross-examination from Mr Al-Harazi's defence team, that her analysis was "guesswork".

Jury members was shown images of bloodstains on the back of the sleeping bag, including spots on the sleeve, cuff and near the neck of the suit.

Ms Keglovic said blood was also detected on a black hooded jumper belonging to the accused.

Al-Harazi's trial continues in front of Justice Richard Refshauge on Tuesday.