帮我把这些变量初始化： QLabel *m_testStateKeyLabel = nullptr; QLabel *m_testStateValueLabel = nullptr; QLabel *m_testOverTimeKeyLabel = nullptr; QLabel *m_testOverTimeValueLabel = nullptr; QLabel *m_flowOverTimeKeyLabel = nullptr; QLabel *m_flowOverTimeValueLabel = nullptr; QLabel *m_signalCharacteristicsValueLabel = nullptr; QLabel *m_deviationValueLabel = nullptr; QLabel *m_coolantKeyLabel = nullptr; QLabel *m_coolantValueLabel = nullptr;

可以使用以下代码进行初始化：

m_testStateKeyLabel = new QLabel(this);
m_testStateValueLabel = new QLabel(this);
m_testOverTimeKeyLabel = new QLabel(this);
m_testOverTimeValueLabel = new QLabel(this);
m_flowOverTimeKeyLabel = new QLabel(this);
m_flowOverTimeValueLabel = new QLabel(this);
m_signalCharacteristicsValueLabel = new QLabel(this);
m_deviationValueLabel = new QLabel(this);
m_coolantKeyLabel = new QLabel(this);
m_coolantValueLabel = new QLabel(this);

// 设置标签的属性和位置
m_testStateKeyLabel->setText("Test State: ");
m_testStateKeyLabel->setGeometry(QRect(10, 10, 100, 30));
m_testStateValueLabel->setGeometry(QRect(120, 10, 100, 30));
m_testOverTimeKeyLabel->setText("Test Over Time: ");
m_testOverTimeKeyLabel->setGeometry(QRect(10, 50, 100, 30));
m_testOverTimeValueLabel->setGeometry(QRect(120, 50, 100, 30));
m_flowOverTimeKeyLabel->setText("Flow Over Time: ");
m_flowOverTimeKeyLabel->setGeometry(QRect(10, 90, 100, 30));
m_flowOverTimeValueLabel->setGeometry(QRect(120, 90, 100, 30));
m_signalCharacteristicsValueLabel->setGeometry(QRect(10, 130, 100, 30));
m_deviationValueLabel->setGeometry(QRect(10, 170, 100, 30));
m_coolantKeyLabel->setText("Coolant: ");
m_coolantKeyLabel->setGeometry(QRect(10, 210, 100, 30));
m_coolantValueLabel->setGeometry(QRect(120, 210, 100, 30));

需要根据你的实际需求来设置标签的属性和位置。