New Crowdin translations - zh-CN (#24679)

Co-authored-by: Crowdin Bot <support+bot@crowdin.com>

docs/zh/config/_autotune.md

@@ -131,6 +131,20 @@ Additional notes:
 
 - Whether tuning is applied while flying or after landing can be [configured using parameters](#apply-tuning-when-in-air-landed).
 
+<div v-if="$frontmatter.frame === 'Multicopter'">
+
+## Autotuning Large Vehicles
+
+For big multicopter vehicles you may need to increase the desired raise time of the step response [MC_AT_RISE_TIME](../advanced_config/parameter_reference.md#MC_AT_RISE_TIME).
+This requires some trial and error as an appropriate rise time depends on both vehicle size and the rotor response.
+
+Note that if there are slow oscillations in pretuning it may mean that the attitude loop is too fast compared to the rate loop.
+In this case you should troubleshoot as described in [Drone oscillates when performing the pre-tuning test](#drone-oscillates-when-performing-the-pre-tuning-test).
+
+<!-- Fixed wing rise time is hardcoded (it's lower than on multirotors and is probably enough for most platforms). -->
+
+</div>
+
 ## 故障处理
 
 ### Drone oscillates when performing the pre-tuning test

docs/zh/config/safety.md

@@ -146,6 +146,12 @@ The settings and underlying parameters are shown below.
 | 数据链路丢失超时 | [COM_DL_LOSS_T](../advanced_config/parameter_reference.md#COM_DL_LOSS_T) | 数据连接断开后到故障保护触发之前的时间。                                                            |
 | 故障保护动作   | [NAV_DLL_ACT](../advanced_config/parameter_reference.md#NAV_DLL_ACT)                          | Disabled, Hold mode, Return mode, Land mode, Disarm, Terminate. |
 
+The following settings also apply, but are not displayed in the QGC UI.
+
+| 设置                                                          | 参数                                                                                                                   | 描述                                                                   |
+| ----------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------- |
+| <a id="COM_DLL_EXCEPT"></a>Mode exceptions for DLL failsafe | [COM_DLL_EXCEPT](../advanced_config/parameter_reference.md#COM_DLL_EXCEPT) | Set modes where DL loss will not trigger a failsafe. |
+
 ## 地理围栏故障保护
 
 The _Geofence Failsafe_ is triggered when the drone breaches a "virtual" perimeter.