Flame envelope的音標為["fle?m v?n?ple?s]：

基本翻譯為“火焰信封”。

速記技巧：envelope通常簡稱為“封套”，與火焰（flame）有關聯。通過聯想記憶，可以快速記住這個單詞。

Flame envelope這個詞的詞源可以追溯到拉丁語和希臘語，具體來說，它是由“flame”（火焰）和“envelope”（包裹）兩個部分組成的。這個詞的意思是“火焰的包裹”，通常用來描述火焰的形狀或趨勢。

變化形式：在英語中，Flame envelope沒有明顯的形式變化。

相關單詞：

1. Flamelet：小火焰；小火苗。這個詞是由“flame”（火焰）和“let”（讓）組成的，通常用來描述非常小的火焰。

2. Flame-out：熄火；火焰熄滅。這個詞是由“flame”（火焰）和“out”（出去）組成的，通常用來描述火焰熄滅的情況。

3. Envelope flame：包覆火焰；火焰的包裹。這個詞是由“envelope”（包裹）和“flame”（火焰）組成的，可以用來描述火焰的形狀或趨勢。

4. Flame-shaped：火焰狀的；形如火焰的。這個詞是由“flame”（火焰）和“shaped”（形狀）組成的，用來描述具有火焰形狀的事物。

5. Flame-like：像火焰的；似火的。這個詞是由“flame”（火焰）和“like”（像）組成的，用來描述具有火焰特性的事物。

以上這些單詞都與Flame envelope有某種程度的關聯，并且可以用來描述與火焰相關的現象或物體。

Flame envelope常用短語：

1. flame envelope effect 火焰包覆效應

2. flame envelope generator 火焰包覆效應發生器

3. flame envelope temperature 火焰包覆溫度

4. flame envelope control 火焰包覆控制

5. flame envelope analysis 火焰包覆分析

6. flame envelope optimization 火焰包覆優化

7. flame envelope monitoring 火焰包覆監測

雙語例句：

1. The flame envelope of the gas burner is stable and uniform.

煤氣灶的火焰包覆穩定均勻。

2. The flame envelope of the rocket engine is controlled by adjusting the thrust.

火箭發動機的火焰包覆通過調節推力來控制。

3. The flame envelope of the furnace is controlled by adjusting the air supply and fuel flow rate.

爐子的火焰包覆通過調節空氣供應和燃料流量來控制。

4. The flame envelope of the welding torch is controlled by adjusting the welding current and voltage.

焊接割炬的火焰包覆通過調節焊接電流和電壓來控制。

5. The flame envelope of the gas stove is controlled by adjusting the gas flow rate and ignition timing.

燃氣灶的火焰包覆通過調節燃氣流量和點火時間來控制。

6. The flame envelope of the candle is controlled by adjusting the wick length and ignition timing.

蠟燭的火焰包覆通過調節燭芯長度和點火時間來控制。

7. The flame envelope of the incense stick is controlled by adjusting the burning speed of the incense stick.

香燭的火焰包覆通過調節香燭燃燒速度來控制。

英文小作文：

The Flame Envelope of a Candle

Candles are a beautiful way to add a soft and romantic atmosphere to a room. When a candle is burning, its flame envelope creates a beautiful glow that can cast a soft light on the room and add a touch of warmth and comfort. However, candles can also pose a safety hazard if not used properly. One of the most important things to remember when using candles is to ensure that the flame envelope is kept stable and not allowed to get too close to anything that could catch fire. This includes curtains, furniture, and other flammable materials. Keeping the flame envelope stable also ensures that the candle burns evenly and creates a beautiful and consistent light source. Additionally, it is important to keep an eye on the candle throughout its burn time to ensure that it does not burn too long or too short, which could affect its quality and safety. In conclusion, the flame envelope of a candle is an essential part of its beauty and safety, and it requires careful attention to ensure that it burns safely and evenly throughout its lifespan.