"trial challenge" is correct and usable in written English.
You can use it when referring to a challenge that involves trials or tests, such as an experiment or assessment. For example, "The professor gave the class a difficult trial challenge as part of their final exam."
Earlier, Tory cabinet minister Eric Pickles joked his phone was on speed dial to ensure she faced the bug trial challenge.
The Huffington Post reports that MacAndrews & Forbes Holdings, the holding company owned by multi-billionaire Ronald Perelman, is debating whether to leave the U.S. Chamber of Commerce over its extreme climate position and recent "Scopes Monkey Trial" challenge to the EPA over the Clean Air Act.
These data enabled us to test the effect of circulating strain (A or B), vaccine exposure (yes or no), study design (clinical trial, challenge study or cohort study) and diagnostic method (laboratory-confirmed clinical diagnosis, serological diagnosis and clinical diagnosis).
The Guantlet Time trial challenge is the closest to American Ninja Warrior or Wipeout available in the mud run market today.
In suggesting solutions to various trial challenges, he reports on a study design that seems potentially highly prone to bias.
A federal appeals court refused Thursday to release videotapes of the trial challenging the constitutionality of California's same-sex marriage ban.
1 Guantánamo Trial Challenges Officials acknowledge that the first full war crimes trial before a military tribunal at Guantánamo is in turmoil and say there will be substantial changes made in coming weeks.
"That is the key phrase regarding this issue," said Ronald F. Ferguson, an economist at the Kennedy School of Government at Harvard, who testified for the plaintiffs at the trial challenging the financing system.
The Oracle Corporation has clashed with Microsoft in dozens of recent software deals, according to sales records that provide a glimpse of some of the evidence likely to be introduced in the trial challenging Oracle's $7.7 billion bid for PeopleSoft.
The trial "challenges... how we do prevention," says Ridker.
Spontaneous breathing during invasive MV has been advocated for critically ill adults with ARDS as it improves lung mechanics, oxygenation and patient outcome, but the recent ACURASYS trial challenged this assumption [8, 9, 39, 40].
